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  2. List of lava tubes - Wikipedia

    en.wikipedia.org/wiki/List_of_Lava_Tubes

    Elmenteita Badlands north of Mt. Eburru – several small caves [2] Leviathan Cave – At 12.5 kilometres, it is the longest lava tube in Africa. [3] Emuruangogolak Volcano caves [2] North Chyulu hills area – 20 caves are known [2] Hells Teeth [2] Kimakia Caves [2] Mathioni [2] Skull Caves [2] Kimakia Cave [2]

  3. List of karst areas - Wikipedia

    en.wikipedia.org/wiki/List_of_karst_areas

    Podolia and Bukovina regions in the northeastern edge of the Carpathian Mountains which includes some of the largest gypsum caves in the world, including the Optymistychna Cave, which is over 200,000 meters in length, making it the longest cave in Eurasia, the third longest in the world, and the longest gypsum cave in the world. [citation needed]

  4. Caverns of Sonora - Wikipedia

    en.wikipedia.org/wiki/Caverns_of_Sonora

    The cave is formed in 100-million-year-old Segovia Limestone, of the Edwards Group. The formation of the cave itself probably occurred between 1.5 and 5 million years ago. The cave is formed primarily along joints, which allowed gases to rise up from depths of around 1.5 mi (2.4 km) to then depths of about 300 ft (91 m).

  5. Alabaster Caverns State Park - Wikipedia

    en.wikipedia.org/wiki/Alabaster_Caverns_State_Park

    Alabaster Caverns State Park is a 200-acre (0.81 km 2) state park approximately 4.5 miles (7.2 km) south of Freedom, Oklahoma, United States near Oklahoma State Highway 50. [3] The park attracted 24,706 visitors in FY 2016, The lowest count of the three parks in its part of Oklahoma.

  6. Grutas de Cacahuamilpa National Park - Wikipedia

    en.wikipedia.org/wiki/Grutas_de_Cacahuamilpa...

    Both peoples used the caves for ceremonial purposes. [4] The original name of the caves was “Salachi.” The current name, “Cacahuamilpa,” comes from a location near the cave entrance and means “peanut field.” [6] After the Conquest, the existence of the caves was kept hidden from the Spaniards by the indigenous peoples. [2]

  7. Manjanggul - Wikipedia

    en.wikipedia.org/wiki/Manjanggul

    Manjanggul (Korean: 만장굴) is a lava tube located in Gimnyeong-ri, Gujwaeup, Jeju City, South Korea.At up to 23 metres (75') wide, 30 metres (100') high and 8.928 km (5½ miles) long, it is the 12th-longest lava tube in the world and the second longest on Jeju Island, [1] although a significant portion of the cave is closed to visitors. [2]

  8. Lava cave - Wikipedia

    en.wikipedia.org/wiki/Lava_cave

    A lava cave is any cave formed in volcanic rock, though it typically means caves formed by volcanic processes, which are more properly termed volcanic caves. Sea caves , and other sorts of erosional and crevice caves, may be formed in volcanic rocks, but through non-volcanic processes and usually long after the volcanic rock was emplaced.

  9. Wonder Cave (Kromdraai, Gauteng) - Wikipedia

    en.wikipedia.org/wiki/Wonder_Cave_(Kromdraai...

    The cave is the third-largest cave chamber in the country (behind the second largest, Sudwala Caves, and the largest, Cango Caves). It is 5-10 million years old. It is 5-10 million years old. The single chamber has an area of 46,000 square metres (500,000 sq ft), and is 125 by 154 metres (410 by 505 ft).