(The Conversation) – While millions of Americans vacation on beaches every year to seek out sun, sand and the sea, many might not realize how dangerous digging holes in the sand can be.

David Frasier of Fredericksburg, Virginia was spending a day at the beach Monday in Salvo, North Carolina when the accident happened Authorities say he built two 6-foot-deep holes in the sand and ...

He warned that when it comes to digging holes and building sandcastles, the sand is only stable while it’s still moist. Once it dries out, the hole that’s been dug completely collapses in on ...