Register Rock State Historic Site

Lava Hot Springs, ID — Free. ﻿ Part of Massacre Rocks State Park, was an emigrant campground where travelers inscribed their names on basalt boulders. As travelers on the Oregon Trail paused at Register Rock, they succumbed to the all too human desire to leave word of their passage. They inscribed their names and often the date of their passage on Register Rock. Today the largest of these rocks is now sheltered by a...