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