The Crystal Grottoes Caverns in Boonsboro was discovered in 1920 when the area was being quarried. The natural formations dangling on illuminated walkways were saved because of their beauty and commercial potential.
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The Crystal Grottoes Caverns in Boonsboro was discovered in 1920 when the area was being quarried. The natural formations dangling on illuminated walkways were saved because of their beauty and commercial potential.
