One of several known locations in Colorado to view fossilized dinosaur tracks is now public land. Tracks are "roughly 150 million years old".
Clearly a better alternative than M-DISK for saving tracks.
https://earthsky.org/earth/dinosaur-tracks-sauropod-colorado-national-forest/
https://www.smithsonianmag.com/smart-news/you-can-visit-the-worlds-largest-continuous-dinosaur-trackway-is-now-on-protected-public-land-180984187/
https://www.smithsonianmag.com/smart-news/you-can-visit-the-worlds-largest-continuous-dinosaur-trackway-is-now-on-protected-public-land-180984187/