- 1. What type of geological feature is the Giant’s Causeway?
A) Granite cliffs
B) Basalt columns
C) Sandstone arches
D) Lava flow
- 2. What is the name of the hole located in Siberia that was formed by a gas explosion?
A) Lake Baikal
B) Batagaika Crater
C) Kola Superdeep Borehole
D) Vredefort Crater
- 3. Which hole is known for being the deepest hole dug by humans?
A) Challenger Deep
B) Crater Lake
C) Kola Superdeep Borehole
D) Mariana Trench
- 4. Where can you find the 'Tunnel of Love', a railway tunnel?
A) France
B) Italy
C) Germany
D) Ukraine
- 5. What strange feature is found in the mineral-rich pools of Pamukkale, Turkey?
A) Crystal caves
B) Volcanic pits
C) Travertine terraces
D) Sand dunes
- 6. What is the name of the large, circular hole in the ocean near the coast of Belize?
A) Lake Titicaca
B) Great Blue Hole
C) Sargasso Sea
D) Andaman Sea
- 7. What is the largest sinkhole in the world, located in China?
A) Zhengjiajie
B) Maya Sinkhole
C) Puerto Rico Sinkhole
D) Xiaozhai Tiankeng
- 8. Which state in the U.S. features the 'Devil's Kettle', where one side of a waterfall has no visible outlet?
A) Colorado
B) Oregon
C) Arizona
D) Minnesota
- 9. What is the observation hole in the Yucatán Peninsula known for?
A) Cenotes
B) Glacial Lakes
C) Desert Valleys
D) Coral Reefs
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