Register Rock is a 100 foot sandstone cliff that sits back from the Platte River. Thousands of emigrants traveling the Oregon, California & Mormon Trails would camp at the foot of the cliffs. And many of them inscribed their names, place of origin (or where they were headed and dates on the rock. It was like a great big hotel registry for the campsite. A trail follows along the base of the cliff allowing a visitor to view the inscriptions. The day we were there, I was accompanied by a resident Corgy (probably from the local ranchhouse) who led me down the path and back to the parking lot.