Some amazing, interactive lidar images were posted here in The Guardian yesterday. The article appears to be a promo for ESRI UK, but who cares? Scroll to the Rio Negro at the bottom of the page and drag the slider all the way to the right.
I browsed the ESRI website to hunt down some more. I found this stunning section named Bare Earth—a masterpiece of beautiful web design accompanied with museum-quality content explaining the workings of lidar and the intricate natural footprints it exposes. Tab over to “Rivers” and marvel at an x-ray of the Sauk as vegetation is stripped away, revealing a million years of hydro-geomorphologic history.