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Cover-subsidence sinkholes tend to develop gradually where the covering sediments are permeable and contain sand. In areas where cover material is thicker or sediments contain more clay, cover-subsidence sinkholes are relatively uncommon, are smaller, and may go undetected for long periods.
Originally posted by Phage
My apologies to Tetra and everyone else on this thread.
Originally posted by AthlonSavage
Mabey the craters on moon were created from the sink hole effect and not from impacts from celestial objects.
Originally posted by AthlonSavage
The picture linked below is shows an impact crater from an asteroid. This is the explanation given my main stream science.
But is it really from an asteroid it could as easily be a gigantic sink hole.