Dry stone constructions, with everything already on site | Cultural Heritage. Goverment of Catalonia.

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Dry stone constructions, with everything already on site

These traditional dry stone constructions have an evocative simplicity and beauty

Stone on stone

Catalonia has a rich heritage, and all around there are pathways and constructions that are full of history. We are referring to the country's dry stone constructions, examples of an outstanding technique used in traditional architecture. As the name would suggest, it involves the use of stones, available in abundance throughout the countryside.
 
The technique consists of building by placing stone upon stone without using any other material, such as plaster or cement, to bond them together, the soundness of the construction deriving from the correct positioning of the stones. While it might seem simple it is, in fact, a traditional technique that calls for a high degree of knowhow and expertise, and today there are those who still devote themselves to this art.

A manual to get to know this technique through easy-to-understand explanations is Parets de pedra seca. Manual per a la construcció i la reparació. (Dry Stone Walls. Construction and Repair Manual). This book published in Switzerland can now be read in Catalan, thanks to the El Solà Foundation and the ‘Editorial Andorra’ publishing company.

  • Still taken from the video made to present the candidacy of the art of dry stone construction for recognition by UNESCO as an Intangible Cultural Heritage of Humanity  
  • Ceiling of a stone vat. El Pont de Vilomara i Rocafort (Bages). Foto: Jordi Play  
  • Terrace-retaining wall. Ripollès. Foto: Jordi Play  
  • The book "Dry Stone Walls. Construction and Repair Manual".

Around the Mediterranean, and much further afield

The dry stone construction technique has been with us since prehistory, especially since the Neolithic period. The first constructions were concentrated in the Middle East, but migratory movements extended the practice to the Mediterranean Basin, where it became an established and frequent form of architecture.  
 
Catalonia, along with the Valencian Community and the Balearic Islands, has a rich history of dry stone construction. Although it is difficult to date its origins in Catalonia, we can say they date back to the 6th century BCE, during the time of the Iberians. Dry stone construction reached its golden age during the 18th century, and the first constructions to have survived until now date from that time. If you would like to see them you only have to visit El Camp de Tarragona, El Penedès, L'Urgell, El Segrià, La Ribera d'Ebre, La Terra Alta, L'Empordà, Les Garrigues, La Segarra and El Bages.

  • Hut with vaulted roof. Agramunt (Urgell). Foto: Vicent Loscos
  • Shed in Ximbalar. Llançà (Alt Empordà). Foto: Vicenç Armangue

A unique, functional and diverse architecture

Over the years, dry stone constructions have played an important role in agriculture, animal husbandry, the provision of water, forestry and land communications. While they all use the same main material, stone, the constructions are very different from each other depending on their purpose, the kind of stone available and the local building techniques. Every construction has its own raison d'etre.
 
Sheds are one of the most frequent kinds of structure. They were used to provide shelter from the rain and other inclemencies for people working in the countryside. They also provided a place for people to warm themselves around a fire in winter as well as providing cool and shade in the summer. They were also used as storerooms and as places to shelter livestock. There are various kinds of shed, such as huts, shelters and caves and they can be circular, square, rectangular and can have barrel vaulted roofs.  
Other kinds of construction are the cisterns meant for collecting rainwater, folds or pens for keeping animals, and the tubs and vats used in wine production. All this variety, and each builder's personal artistic touch, means that every construction is unique.

  • La Capona large shed. El Pla de Santa Maria (Alt Camp). Foto: Esther Bargalló
  • Large juniper oil oven. Riba-roja d’Ebre (Ribera d’Ebre). Foto: Josep Blanch
  • Terrace-retaining walls. El Perelló (Baix Ebre). Foto: Esther Bargalló
  • Mont-roig fold. Els Plans de Sió (Segarra). Foto: Vicent Loscos
  • Stone vats in Solanes. El Pont de Vilomara i Rocafort (Bages). Foto: Jordi Play

Sustainability in a pure form

Dry stone structures are sturdy and the construction technique is versatile and totally respectful to the environment. The stone is taken from the ground itself, it is not treated, and once the construction is completed it is unobtrusive and blends in perfectly with its surroundings. Furthermore, any structure that falls into disuse and becomes dilapidated becomes integrated, once again, with its natural setting.
 
Dry stone constructions were therefore already on site before they were built, and remain so once completed, something that makes them 100% sustainable and, according to the qualities of the stone that is used, they take their particular characteristics and their colours from the land they are built on.
 
For example, there are contrasts in colour between the clear white of the limestone used in El Camp de Tarragona, Central Catalonia, the districts of Girona and Les Terres de l’Ebre; the dark tones of the slate used in L’Alt Pirineu, L’Aran and L’Alt Berguedà; the red of the volcanic stone in the Pedra Tosca Park in La Garrotxa, the only place in Catalonia with constructions made with this kind of stone, and the Bundsandstein, or reddish coloured sandstone, typical of many constructions in the Baix Llobregat and other places.

  • Shed in Penedès. Foto: Jordi Play
  • The Oliveres or Fontanals shed. El Pla de Santa Maria (Alt Camp) 
  • Shed in Pedra Tosca Park. Les Preses (Garrotxa)

Wet stone

Throughout the districts of Les Terres de Ponent, Les Terres de l’Ebre, El Camp de Tarragona, La Conca de Barberà and El Priorat, numerous constructions can be seen with the most curious shapes. Why is this? These districts have relatively little rainfall and water is a scarce resource, as a consequence of which these districts display an outstanding heritage with regard to water conservation consisting of cisterns, mini reservoirs, dams, wells and waterwheels, amongst other facilities for capturing rainwater and accessing water from the water table, of key importance for agricultural work. 
 
The sustainability of these constructions lies, not only in the technique and material used to build them, but also in their purpose.

  • Well for the Ca la Marta waterwheel. Fatarella (Terra Alta). Authorship and ownership of the image: Fundació el Solà i Escola Tècnica Superior d'Arquitectura de la Universitat Rovira i Virgili in the framework of the doctoral thesis"Dry stone: constructive heritage, knowledge and technique"
  • Stone cistern. Tivenys. (Baix Ebre). Authorship and ownership of the image: Fundació el Solà i Escola Tècnica Superior d'Arquitectura de la Universitat Rovira i Virgili in the framework of the doctoral thesis"Dry stone: constructive heritage, knowledge and technique"
  • Ribot cistern in La Gironeta. Torrebesses (Segrià). Foto: Mario Urrea
  • Ice house. Tàrrega (Urgell). Foto: Oriol Saula. Museum of Urgell-Tàrrega
  • Bep del Pubill mini reservoir. Torrebesses (Segrià). Foto: Mario Urrea

Finishing touches

But these dry stone constructions have many other features too, such as steps, ovens, shelters, structures for storing potatoes, and hives built into terrace-retaining walls for the production of honey. In Les Terres de Ponent and L’Alt Pirineu we can also find hiding places used while hunting with birdlime, and traps consisting of enclosed spaces with gently sloping walls leading inwards, used to hunt wolves. 
 
Inside the sheds there may also be decorative elements such as cavities in the walls, part of the original structure, mangers, cupboards, benches and fireplaces.  
 
There are other practical elements too. Farm workers would keep their water jugs cool in recesses in the wall, there were niches for storing baskets of food or tools, there would be bedding for taking a nap, and holes in the roof would serve as chimneys.

  • Steps in a terrace-retaining wall in Tossal de la Fonta. Preixana (Urgell). Foto: Andreu Serés
  • Recess. Mont-roig del Camp (Baix Camp). Foto: Antoni Salvador
  • Niches in the Quicolis shed. Freginals (Montsià). Foto: Esther Bargalló
  • Hiding place for hunting with birdlime. Tàrrega (Urgell). Foto: Roger Costa
  • Stone sink with outflow. Fatarella (Terra Alta). Authorship and ownership of the image: Fundació el Solà i Escola Tècnica Superior d'Arquitectura de la Universitat Rovira i Virgili in the framework of the doctoral thesis"Dry stone: constructive heritage, knowledge and technique"

Catalonia, a land of dry stone constructions

At present more than 32,000 dry stone constructions have been catalogued in Catalonia, some of which have been declared Features of National Cultural Interest. Such is the case with the Jaume de la Cota stone shed in Mont-roig del Camp (Baix Camp), one of the largest in Catalonia, with an interior height of 3.9 metres and a diameter of 4.1 metres, dimensions that merit the sobriquet of "The Cathedral". Another record-breaking construction is the Mas Llauradó hut in Aitona (Segrià). It covers an internal space of 200 square metres and is 5.6 metres high, making it the largest barrel vaulted dry stone construction in Catalonia. It is so big that a tractor can turn round in it.
 
Not all the constructions declared to be Features of National Cultural Interest are dry stone sheds, however. Some thirteen stone vats have been awarded this distinction, all of them located in the municipalities Mura, El Pont de Vilomara i Rocafort, and Talamanca, and it is in Talamanca, in the district of Bagès, that there is one of the best preserved ensembles of such stone vats. There are seven of them in all and they were collectively built for the production of wine between the 18th and 19th centuries. Such vats were often built within the towns and underground, but the Casa de les Tines in Talamanca was built amongst the vines and on the surface. The Bessó terrace-retaining wall in Vinaixa (Garrigues) is also outstanding. With a length of 128 metres it is one of the longest. The qanat in L’Estany (Moianès), an underground aqueduct, is the only example of such a construction in Catalonia and extends for 435 metres.

  • Jaume de la Cota shed. Mont-roig del Camp (Baix Camp). Foto: Esther Bargalló
  • Mas Llauradó hut. Aitona (Segrià). Foto: Mateu Esquerda
  • Shed in L’Ametller. Amposta (Montsià). Foto: Esther Bargalló 
  • Casa de les Tines. Talamanca (Bages). Foto: Esther Bargalló
  • Bleda stone vats. Pont de Vilomara i Rocafort (Bages). Foto: Jordi Play
  • Bessó terrace-retaining wall. Vinaixa (Garrigues). Foto: Ferran Obiols

An everlasting technique

The highest recognition for dry stone architecture came in 2018 when UNESCO included this technique on the Representative List of Intangible Cultural Heritage of Humanity. Cyprus headed the candidature, joined by Greece, France, Croatia, Slovenia, Italy, Switzerland and Spain, the intention being to raise awareness about these constructions and the important role they play in the countryside and for biodiversity. 
 
Although the technique has its origins thousands of years ago, the skills involved have never been lost and it continues to be used in contemporary, sustainable architecture. Moreover, numerous associations, professionals and experts have launched initiatives to raise awareness about its heritage value, extend its use, and pay due homage to those who practice the art.  
 
Such is the case of the not-for-profit Associació per la Pedra Seca i l’Arquitectura Tradicional, (Dry Stone and Traditional Architecture Association), that works to promote various initiatives regarding dry stone construction; la Setmana de la Pedra Seca (Dry Stone Week), an annual event for the promotion and recognition of the technique as both heritage and craft; the Trobada de Pedra Seca i Arquitectura Tradicional (the Dry Stone and Traditional Architecture Meeting), a biannual workshop for the dissemination and study of the dry stone technique and for the exchange of ideas between people and groups interested in dry stone architecture; and the exhibition entitled, ‘Tota pedra fa paret. La pedra seca a Catalunya (Every stone makes a wall. Dry stone architecture in Catalonia), as well as other courses and craft workshops regarding employment in the field of dry stone architecture. 

  • Still from the video presenting the candidature of the art of dry stone architecture for inclusion by UNESCO on the Representative List of Intangible Cultural Heritage of Humanity

Digital dry stone

If you would like to learn more about this technique and visit the constructions that exist around the country, you can consult digital resources such as the collaborative inventory Wikipedra, the Dry Stone app and the glossary produced by the Observatori del Paisatge, which brings together more than a thousand words referring to dry stone architecture in places where Catalan is spoken.
  • Screen shots of Wikpiedra, the Dry Stone app and the Observatori del Paisatge glossary