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Dolmen of Chabola de la Hechicera at sunrise, Elvillar, Basque Country, Spain
Stacked volcanic rock forms the exterior wall of an ancient Sinagua Indian cliff dwelling on a high desert canyon promentory.  This wall contains a portal through which arrows could be fired at an enemy while permitting concealment from attack.  Visibility from this vantage ponit is also very good for hundreds of yards across the desert terrain. The Sinagua Indian tribe that selected this site did so for its defensible position.  On the opposite side of the site a sheer cliff drops to a long steep hill that descends to a dry riverbed - allowing no access from that side.  Site selection was critical for the Sinagua, and perfectly executed here. This culture combined hunting and gathering with agriculture, but the latter was challenging in this arrid, high desert wilderness terrain. The exact site location, which requires considerable effort to reach, is intentionally omitted. Its estimated age dates to 1300 AD - 1400 AD. Remote Sinagua Cliff Dwelling Site, Northern Arizona, 2013.
The dolmen of Sorginetxe illuminated at sunset, is a funerary monument located in the province of Araba, Euskadi., Spain.
Olive trees and boulder in a Sicilian garden
Dolmen Chabola de la Hechicera, Elvillar, Alava, with a night sky with clouds
Megalithic funerary monument, Ribeira,  Barbanza , ría de Arousa, A Coruña province, Galicia, Spain. This dolmen is a monument  of public free access.
Gamla Nature Reserve in Israel - the ancient city and the tallest waterfall in the Golan Heights
Dolmen de Tella in Pyrenees of Huesca Aragón of Spain in Sobrarbe area
A group of dolmens in Elvillar, Álava, in the Basque Country (Rioja), Spain, called La chabola de la Hechicera.
Dolmen. La Casa de la Echicera dolmen in Rioja Alavesa, Euskadi
Giants' grave of Mont'e s'Abe, an ancient burial site located south of Olbia city. Province of Sassari. Sardinia. Italy.
Dolmen of Sorginetxe at twilight
Circular arrangements of megalithic stones in  Alentejo Portugal
Dolmen of Lacara, funeral chamber. Ancient megalithic building near La Nava de Santiago, Extremadura. Spain
Carbonera traditional holm oak charcoal furnace in Font Roja of Alcoy in Alicante Spain
Photographs of the dolmen Sorginetxe at dusk and storm clouds
Reconstructed doorway of a bishops farm in the Norsemen settlement Gardar in the arctic summer in Igaliku in the south western part of Greenland. The Norsemen left the place in the beginning of the 15th century and the modern excavations are today a public park in the small village
The dolmen of Sorginetxe illuminated at sunset, is a funerary monument located in the province of Araba, Euskadi., Spain.
The Gallery grave of Keryvon is a megalithic complex located in the commune of Pleumeur-Bodou in Côtes-d'Armor.
Dolmen in the green plain under the snowy mountains in a clear an d sunny day of winter
Ancient portal dolmen, megalithic tomb, The Burren, Country Clare, Republic of Ireland.
Sierra Martilla Archaeological site in Granada, Andalusia, Spain
Mature women exploring and photographing deep ponor cave of Cerknica intermittent lake  in afternoon in dry season, no water, just deep rocky holes-known for the karst phenomenon of draining.
The Dolmen de Menga is in the Spanish town of Antequera. It is a covered gallery dolmen and almost rectangular plant, dating from the 3rd millennium BCE.
A lone Megalithic stone sits upright outside of Sagres Portugal
Dolmen megalithic in Zamora, Spain
This is an isolated stone in the Dunbria mountains of La Coruna, Spain, which is a tourist attraction.
One of the known as Dolmenes de El Pozuelo, near of the atlantic in Huelva, Andalusia, Spain. Dated between 3000 and 2500 b.c. There are at least 18 burial areas discovers and 9 dolmens that can be visited.
Two big boulders by the roadside in the English lake District not far from Ambleside, United Kingdom.
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