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