- 1. What type of geological feature is the Giant’s Causeway?
A) Sandstone arches
B) Basalt columns
C) Lava flow
D) Granite cliffs
- 2. What is the name of the hole located in Siberia that was formed by a gas explosion?
A) Kola Superdeep Borehole
B) Lake Baikal
C) Batagaika Crater
D) Vredefort Crater
- 3. Which hole is known for being the deepest hole dug by humans?
A) Kola Superdeep Borehole
B) Challenger Deep
C) Mariana Trench
D) Crater Lake
- 4. What is the name of the large, circular hole in the ocean near the coast of Belize?
A) Great Blue Hole
B) Andaman Sea
C) Lake Titicaca
D) Sargasso Sea
- 5. What is the largest sinkhole in the world, located in China?
A) Maya Sinkhole
B) Zhengjiajie
C) Xiaozhai Tiankeng
D) Puerto Rico Sinkhole
- 6. Where can you find the 'Tunnel of Love', a railway tunnel?
A) Germany
B) Italy
C) Ukraine
D) France
- 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) Cenotes
B) Glacial Lakes
C) Desert Valleys
D) Coral Reefs
- 9. 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
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