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Ares del Maestrat, Spain – June 28, 2020: Entrance gate to the cave museum in Ares del Maestrat.
Various valleys and gullies of water at the bottom of Lake Cerkniška in Slovenia. The lake thus dries up and flows into underground rivers approximately every 50 years.
A small tunnel along the highway to Santa Maria de Montserrat Abbey on a sunny day.  HDR encoded.
Aerial footage recorded with drone flying over the stunning Siurana town in top of cliff
The impact of the ongoing drought on the Sau Reservoir in Catalunya.\nThe bell tower of the old, abandoned village of Sant Romà, located in central Catalonia's Sau reservoir. Spain
A wide panoramic view inside a natural dissolution cave formed in gypsum.
Archaeological Site of Atapuerca. The caves of the Sierra de Atapuerca contain a rich fossil record of the earliest human beings in Europe. World Heritage Site UNESCO, Spain
Nahal Amud  -caves once inhabited by Homo heidelbergensis and later by Neanderthal Man
The excursion to the blue puddle in Chulilla is by far the route with the most history and one of the most beautiful and with the most anecdotes to tell.\n\nPhilology tells us that the blue puddle takes its name from the term Arabic origin azud, which indicates the presence of a small dam in the area, used to irrigate the orchard adjacent to the town. If we look closely we will still be able to observe some remains of stalking that depart right from this point.\n\nThe road to the blue puddle is an easy route to travel and is quite unmarked so it is not easy to miss. There are two possible roads, one that would start in the southern part of the town, which is the most recommended for those who do not want to walk a lot or climb slopes, since they can park nearby (down in the river) and save the return climb. This road is born from a road that is located by the municipal pool and before reaching the cemetery. We will meet in the lower part of the town known as the barranquillo neighbourhood. We can move forward and go down almost to river level, the ideal place to park our vehicle near the wastewater treatment plant. Once there, we have to follow the path on our right. This option would give us a chance to fully witness the sickles of the Turia River\n\nThe other road goes down the north side of the town towards the river and we can start it with a street near the Plaza de la baronia, the central square of Chulilla where there are several bars. It is perfectly indicated its route through the streets of the town and then there is no loss, always down and up. We can also ask the locals who will kindly answer us.
Heaven Sinkhole at Mersin
The Mount of Quarantine in Jericho in the West Bank
Entrance of an old cave in Frasassi natural park
prison of philosopher Socrates
Derinkuyu cave city in Cappadocia Turkey
An interior view of the caves and homes in Arguedas
Panoramic view of a massive Salt Mine Cave in Garmsar of Iran
Punic sanctuary of the Es Culleram cave, dedicated to Tanit, the main Carthaginian deity linked to fertility and fortune, among other attributes.
Abandoned stone houses at edge of Balcony Walk above Wadi Nakhar, Jabal Shams on sunny day, Oman
Interior of a gold mine with visible gold-bearing quartz pebble conglomerates. Shot in the UNESCO Vredefort Dome World Heritage Site, North-West Province, South Africa.
Antakya Turkey; November 27, 2022: Besikli Magara. Turkish meaning: Besikli Cave in Samandag, Hatay - Turkey.
The old gallery of Cala Gonone, Ogliastra, Supramonte, Dorgali
Asarkale is located on a giant rock mass which can be reached through a secret pass by using inner stairs.
Overall view of Casal del Puig de la Balma, an old farmhouse from the 12th century carved into the rock, a work of the municipality of Mura (Bages, Spain) included in the Inventory of the Architectural Heritage of Catalonia.
석회암 동굴의 벽 VD702
The cave of Zeus at the Naxos Island
Caves located in the Picturesque Gorge of Topolia on Crete Island, Greece
Sterkfontein, South Africa - November 22, 2011: Sterkfontein is a set of caves in Gauteng province, with special interest to paleo-anthropologists. The area is known as the Cradle of Humankind.
Dublin, Ireland - July 16, 1986: 1980s old Positive Film scanned, Escape Tunnel of Blarney Castle, medieval stronghold, County Cork, Ireland.
The cave of the Luire in the Vercors (Drôme) served as a hospital for the resistance during the Second World War
Inside the Szelim cave in Tatabánya
Free Images: "bestof:La cova de Santa Llúcia 032.jpg The cave-hospital of International Brigades in La Bisbal de Falset Catalonia during Spanish Civil War Own 2008-04-20 El noi de"
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