Lime Ridge has numerous trails across open oak grassland. From the ridges one can see most of Walnut Creek and surrounding areas. Hilltops easily accessed from Ygnacio Valley Road are popular locations for viewing fireworks on the fourth of july. The easiest access to Lime Ridge is from the top of Valley Vista Road near Boundary Oak Golf Course. The southern end of the preserve offers amazing Mt. Diablo views and wildflower viewing in the spring. Map