Oregon Trail emigrants referred to the Massacre Rocks area as "Gate of Death" and "Devil's Gate", but modern day travelers use terms like beautiful, serene, and restful to describe the park. the park is rich in Oregon Trail, geological, and natural histories.

Rich in history, pioneers used this area, specifically what is now referred to as ? Register Rock? as a rest stop for years. Today we invite horse owners to water and rest their animals in the corral at Register Rock. Many emigrant names are inscribed on the large rock, which is now protected by a weather shelter. A scenic picnic area surrounds the rock, creating a desert oasis for the modern traveler. The site also includes a horse rest area for highway travelers.

Oregon Trail remnants are most easily seen from highway rest areas in either end of the park. For additional information on the Oregon Trail visit the Three Island Crossing State Park page and the Oregon/California Trail Center website.

Massacre Rocks State Park is a favorite for birdwatchers. Over 200 species of birds have been sighted in the park. Canada geese, grebes, bald eagles, pelicans and blue herons are often seen. Mammals include the cottontail, jack rabbit, coyote, muskrat and beaver. The desert environment produces about 300 species of plants in the park. The most common are sagebrush, Utah juniper and rabbit brush.