CrosswordMint
Enigmatic Wonders of Earth's Geology
Moderate difficulty suitable for most players
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Across
  • 1. A sinkhole or depression formed by limestone dissolution
  • 3. Pebble-sized volcanic ash particles ejected during eruptions
Down
  • 2. A small, rounded lump of mineral or rock in sediment
  • 4. A fragment of crust with distinct geological history
  • 5. Rare type of volcanic rock unique to Japan's region

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