sinkhole sentence examples

• Sometimes the water enters the ground through huge holes called sinkholes.
• Gordon warrick at one of the larger sinkholes, bitter lake national wildlife refuge.
• Colonies of swiftlets are also known to roost in at least three limestone sinkholes.
• Sinkholes formed by cave-ins over the underground rivers common in the region.
• Day 6: we'll start the morning with a stroll around the huge sinkhole above another cave at skocjan.

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