Anthony Romilio

The silt turns to siltstone and the sand turns to sandstone.

Paleontologist Anthony Romilio speaking.

They're explaining how those impressions have been preserved.

And Lisa, in a boost to local hopes of getting the caverns reopened to visitors, the old gold mine that was responsible for the excavations that uncovered the fossils in the first place is now resuming operations, raising the prospect that money might yet be found to make the caverns safe and secure.