Parts of Colorado are still drying out after floods hit the state last month. Eight people died, and damage from the worst flooding in decades is in the hundreds of millions of dollars.
Scientists are now venturing into the hardest-hit areas to do a sort of "flood forensics" to understand why the floods were so bad.
Geologist Jonathan Godt takes Peak Highway in northern Colorado up into the Rockies. The road there winds past ravines and streams where water is still rushing.