DANVILLE -- The East Bay's geographic crown jewel, Mount Diablo, takes center stage in a new exhibit at the Museum of the San Ramon Valley.

The Perspectives on Mount Diablo exhibit, which opens Saturday and runs through June 30, explores the mountain's history starting with 19th-century surveying instruments accompanied by stories, photographs and history about the 3,864-foot mountain.

The exhibit features a display about the mountain as a state park with attention to the treasured Mount Diablo beacon. The beacon, originally lit in 1928, will benefit from funds being raised to restore the historic landmark.

Photos by prominent nature photographers Stephen Joseph and Scott Hein featuring mountain trees and flowers are displayed, along with eight Works Progress Administration (WPA) plant posters.

Museum patrons will learn why Mount Diablo is a prime destination for enthusiasts of geocaching, the adventure activity in which people search for hidden treasures (caches) using GPS technology.

The museum, 205 Railroad Ave., is open 1 to 4 p.m. Tuesday through Friday, 10 a.m. to 1 p.m. Saturday and noon to 3 p.m. Sunday Admission is $5 for a family. $3 per adult, $2 for students with I.D. and $1 for children. Visit www.museumsrv.org for more information.