Ancient volcanoes standing above the park spilled lava onto the sandy desert landscape. Lava tubes form as the flow cools on the surface and crusts over.
New legislation could create a new state park at the site of one of Utah's largest dinosaur fossil digs.
House Bill 322 from Republican Representative Steve Eliason would create "Utahraptor State Park" in the Dalton Wells area north of Moab, near Arches National Park...