You are viewing a single comment's thread from:RE: New Mexico Bound - Amarillo, Texas, to Albuquerque, New MexicoView the full contextmarcusantoniu26 (62)in #ulog • 7 years ago Is the Blue Hole a giant sinkhole?
Why yes it is!
The Santa Rosa Blue Hole is very famous in and around cave diving communities; a relatively deep sinkhole that is a geologic anomaly in the high desert of New Mexico."
--http://www.admfoundation.org/projects/santarosa/santarosaexpedition.html
It is limestone rock so at one point the top got too thin and just broke apart. Great question! I had to look for the answer. Learning something new everyday!