When dinosaurs walked through the mud they left footprints, just like you do on a muddy trail. Over time these footprints were filled with sand, small pebbles or ash from a volcano and eventually hardened into rock. The footprints were preserved for millions of years until erosion brought them to the surface where people can see them. It might seem like burying tracks would destroy them, but a blanket of sediment actually helps protect footprints. Another way in which a track can be protected is when an animal's foot sinks deeply into the sediment, creating a footprint below the surface, where it cannot be eroded. Thanks for watching ________________________________________________________________ CREDIT LINKS ► The Vortex Youtube Channel = null ► The Vortex Video = https://www.youtube.com/watch?v=kHTc0ZQmSUE ► National Jurassic Youtube Channel = https://www.youtube.com/channel/UCAcDMMIqfYFp-C-YKxuSUzA ► National Jurassic Video = https://www.youtube.com/watch?v=FBwTODl8VRY _____________________________________________________________________ 🔔 🔔 WONDER WORLD CHANNEL & VIDEO INFORMATION 🔔 🔔 🔵 Wonder World Twitter - https://twitter.com/WonderWorld_YTC ✅ For personal story suggestions or business enquiries about product stories / reviews, please contact me on my email from the ABOUT page. Note: All suggestions are welcome, but may not be chosen as they are not suitable for this channel. ❌ COPYRIGHT : Please do not ask for permission to use footage in this video, or the whole video itself, as the ownership of all footage remains that of the owners who gave me permission to use it. If you want to use any of the footage click on the links above and seek permission from the owners.