Elevations range from about 1,400 feet ( 427 m ) in Halls Valley to peaks over 2,800 feet ( 853 m ) on the Park 's eastern edge .
Grant Ranch Park is situated in the Diablo Range , near Mount Hamilton .
Elevations range from about 1,400 feet ( 427 m ) in Halls Valley to peaks over 2,800 feet ( 853 m ) on the Grant Ranch Park 's eastern edge .
Grant Ranch Park is situated in the Diablo Range , near Mount Hamilton .