The document summarizes Mormon Rocks and Etiwanda Preserve. Mormon Rocks got their name from Mormon Pioneers who camped there. The rocks were formed by the San Andreas fault lifting sandstone, which was then shaped by wind and rain erosion. The San Andreas fault runs through the area and holes in the Mormon rocks were formed as wind and rain eroded boulders out of the sandstone structure over time. The Etiwanda Preserve was created to protect the local Riversidian Alluvial sage scrub habitat and contains various vegetation like white sage, but development has damaged much of the original habitat.