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The Gardens of Alfabia at the foot of the Tramuntana Mountains between Bunyola and Sollér
Because of their high vertical walls, the Mallos de Riglos are a popular destination for rock climbers.
Discovered in Mogi Mirim, from a deposit of weapons and supplies, from the war of 1932. It was used by the revolutionaries to store ammunition and was located a few kilometers before the railway station guarded by the national hole.
View from the bastions of  Saint Hilarion castle in the north of Cyprus
Cave or grotto, view from the outside. Mountainous terrain. Rocks and vegetation.
The view of a tunnel that opens onto the lovely scenery of Southern Norway.
Aydıntepe Yeraltı Şehri
Rock necropolis of san Vitor de Barxacova.  The necropolis was found dating from the 9th and 10th centuries, with anthropomorphic graves that faced east to west.  Galicia, Spain
Križna cave or Krizna cave, Slovenia (Die Höhle Krizna jama - Grahovo, Slowenien) or Križna jama, Slovenija
Rockport Lime Kilns at Sunrise, Rockport, Maine, USA
A locked gate to a mineshaft, Golitha Falls, Cornwall in summer
Avalanche protection underpass on the million dollar highway in southwest Colorado between Ouray and Silverton Colorado in the San Juan mountains in western USA.
a hole in the floor..
Looking down the length of a gypsum mining tunnel (adit) inside an abandoned quarry.
An angled view from inside a cave, looking out towards a lush forest scape of green trees
Lava Tubes are collapsing around the Queen's Bath area of Hawaii.
a ceramic tub filled with very dirty water is dark green in color
detail of an old mediterranean stone house
Una fonte antica coperta di muschio e gocciolante acqua a Giulianova
Path in forest
Landscape Into the Forest. Trees and Rocks in Julian Alps. Soča Valley, Kobarid, Slovenia
A narrow cove leads to a sea cave.
pottery, buildings, rubish in a village
Beijing, China-July 11, 2021: In the last half year before the People's Republic of China established, the CCCPC (the Central Committee of the Communist Party of China) took office in the Fragrant Hills in the vicinity of Beijing. Now it the old offices were well protected as Revolutionary Memorial Site. Here is the Guards' house of Chairman Mao, aslo the Security Office of the general office of the CPC Central Committee.
A tunnel in budapest
The great wall of china near Ba Da Ling.
Cres, Croatia - October 25, 2022: Dock in the harbor of Cres on a sunny day in autumn
Rock Textured Background
A vertical shot of the inside of a rocky cave in Skrad, Croatia
Remains of old stone house window
Free Images: "bestof:Pathfinder tunnel, showing boulder lodged in waterway below A gate - NARA - 294461.jpg Scope and content Photograph from Volume One of a series of photo albums"
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