Four Doors cave site, Telde


The Four Doors site, also known as MountBermeja, is a complex of caves in the south of the municipality of Telde, Gran Canaria.
The Cuatro Puertas site is named after its most spectacular cave, the most emblematic of Gran Canaria due to its uniqueness and location. The site includes many other caves, some linked with each other. A small village nearby also bears that name, as well as a ravine.
The site is listed as Spanish Heritage as a Property of cultural interest.

Location

Cuatro Puertas and MountBermeja are 6 km away from the east coast of the island of Gran Canaria, on the east side of the GC-100 road that links Telde to Ingenio.
The Cuatro Puertas hamlet, situated near the top of MountBermeja, is of easy access: the GC-1 highway and Gran Canaria airport are only 6 km east. The caves' site itself is to the east of the village, after about 500 m of an easy footpath.

Description

Beside its most spectacular cave that gave its name to the whole complex, the site includes several groups of caves, an uncommon ceremonial place, granaries, paths and alleys. The whole was dug in tuff with stone picks by the pre-Hispanic Canarians.
Other caves include the cueva de los Papeles, cueva de los Pilares, cueva de la Audiencia and the cantera de Molinos. Most caves consist of a main central space with smaller rooms opening onto it. The caves were most likely shut off with dry stone walls. The main room may have been partitioned with light structures or with stone alignments.
The site covers practically the whole of Bermeja mount, although only the upper part can be visited.
The chronicles of the conquest hardly mention it, even though it is only 4 km away from the Conquest tower that stands in Gando's sandy bay.

Four Doors cave (''Cuatro Puertas'')

The Four Doors cave, or Cuatro Puertas cave, in the northern part of MountBermeja and near the summit, is a 17 X 7 metres man-made cave opening towards the north-east, dug in tuff and provided with four large doors, all opening onto the same large space. These doors may have been shut some coverings, made of skins or other materials.
Outside, just beyond the porch thus formed, are a series of about 20 post-holes that show that the whole space was enclosed on the outside.
Numerous deliberate changes / arrangements were made to the tuff walls and floors of the Four Doors cave with the aim of achieving a correct orientation to observe the summer solstice.

Use

The cave's use is not clear. But because of the type and position of the location, the cave's monumental aspect, the closeness of the almogarén, and the descriptions of other similar sites in the ethnohistoric chronicles of the conquest, most archaeologists believe that it may have been a sacred place where the worship and rituals were carried out directly by the faycán and the harimaguadas.

Ritual place (''almogarén'')

In the upper part of the mountain, above and not far east from the Four Doors cave, is another cave with a sacred site or ritual space where libations and offerings to the gods were practised in an enclosed space. Milk was also used in the course of these ceremonies. This is similar to the one found at.

Papers' cave (''Cueva de los Papeles'')

The cueva de los Papeles is in the south part of the mount. It is reached by a path cut in the tuff in the south face of the mount, going east from the ritual place.
Its floor plan is more or less circular. its walls bear various engraved triangles, a sign associated with fertility; this cave was probably used for rituals around that theme.

Pillars cave (''Cueva de los Pilares'')

The same path coming from the ritual place to the Papers' cave leads further to the Pillars cave, which is accessed through ramps, stairs and small tunnels.
The Pillars' cave site is the heart and main part of the village of MountBermeja. It is south-orientated, sheltered from the dominant winds and commands a noticeably wide panorama that includes the coast. It may have been surrounded with a thick dry stone wall. Most of the caves are more or less circular inside, many with lateral rooms. There are depressions in the ground for cooking fires, cavities in the walls that would have been used as storage places, seats, holes for beams or posts and grooves for window frames and door frames that would have been shut off with pelts or vegetal cloths.
It included granaries and other recesses, the use of which is uncertain.
From it, a path going east passes through a rock arch and by a narrow "chimney" towards the Audience cave and, further up on the eastern slope, at an interesting grindstone quarry - but of difficult access as the path, neglected, has disappeared under opuntia.

The Audience cave

The cave of the Audience has been used for various functions such as sleeping quarters, kitchens, silos, granary and others. It stands about 200 m away from the Four Doors cave, near a narrow and hard-to-locate "chimney".

The Mills' Quarry (''cantera de Molinos'')

; Generalities on hand-grindstones
These mills, made of stone, were essential to and even emblematic of house life in the Canaries. Every day the gofio was served - some roasted flour stirred into coffee - and barley was much used for this purpose; other flours were also much used, especially on Gran Canaria island where agriculture dominated the means of subsistence, contrary to the other islands of the archipelago where livestock farming bore the largest part in food production.
The two types of stone used for them were either tuff, or vacuolated or vesicular basalt : both provide a rough surface, appropriate for abrasions and grinding; but tuff was 3 times more used than vesicular basalt, the latter for which there is no clear evidence of production centres on the isl.
The use of tuff rather than basalt, had a notable wear-effect on the islanders' dentitions.
Tuff is made of consolidation volcanic ash; it is technically an igneous rock but is more akin to a sedimentary rock because of its relatively loose inner structure; it has not been fired and its matter components have not melted together. Basalt on the other hand is an igneous rock made of cooled lava; its matter has been fired and thus has a much higher structural integrity than tuff. This is true also of vesicular or vacuolated basalt that present many small holes within their matter. Therefore tuff parts, more easily than basalt does, with minute pieces of its own material; these ended up in the flour, and wore out teeth noticeably more than a purer flour would.
The grindstones were excavated so that the block of stone was in one piece and more or less already shaped underneath on the outside. Thus each of them left a round or oval hollow, or imprint, on the surface of rock it came from. These "negative imprints" are found all over the surface of the stone quarried, following the relief and remodelling it. Thus their disposition varies with said relief. These traces of extraction are the means by which grindstones quarries are identified.
On Gran Canaria island, seven production sites were identified, in the municipalities of Agaete at La Calera site and El Risco site ; in Las Palmas at Los Canarios and Montaña Quemada sites, both on the Isleta, and at La Cardonera site ; in Telde at Cuatro Puertas site; and in Santa Lucia de Tirajana at El Queso site.
; Grindstones production in Cuatro Puertas
There are two main production sites for hand grindstones in Cuatro Puertas: one dating back to prehistoric times and, immediately next to it on the east side, a more recent historic site. Both are located in the lower portion of the northern slope of MountBermeja, on the path that leads from the village to the cave, further than the Cuatro Puertas cave. Its altitude extends from 197 m to 210 m. It is close to a military zone.
The site is among a zone of dark-coloured pyroclasts of varying sizes, dating from the Pleistocene era, made of basanite and nephelinite. It is on a steep slope. The extraction has created a south-orientated shelf with an irregular face, about 20 m wide and 10 to 14 m high. There is one main extraction place, and several other smaller ones scattered nearby on the same slope of the mountain.
This site is in good state of conservation. Its south orientation has preserved it from humidity and from being colonized by lichens.

Conservation issues

The site has suffered a notable deterioration due to the natural erosion from wind and water, but also to human actions since up to recently the majority of the caves were used and modified to stable goats and sheep.
In the fifties of the 20th century this archaeological space was used as cinematographic stage for the filming of the film Tirma, led by Silvana Pampanini. For the filming of one of the scenes a large tuff maquette was realized of the Four Doors cave, generating great deteriorations to the original archaeological space.
The Four Doors cave site is listed in Spanish Heritage as a Site of cultural interest in the category "Archaeological site" since May 25, 1972, by decree nr. 1435/1972. The decree was published in the B.O.E. nr. 136 on June 7, 1972.
As of 1999, most of the site's land was private property. At that time the government was negotiating to buy it and that of other nearby sites.
It is currently opened to the public as Archaeological Park.

Other archaeological parks nearby

Other nearby archaeological parks open to the public are the caves of Valeron in Santa Maria de Guia, the Arteara necropolis in Fataga, the El Maipés necropolis in Agaete, the Cats' ravine on Mogán beach near Puerto de Mogan, in Tejeda, and the Painted cave museum and archaeological park in Galdar.

Similar structures

Other similar structures on the island are :