Moaning Cavern Description
Within a 13mi/20km radius north of Sonora there are some caves well worth a visit. In Moaning Cavern near Vallecito, discovered in 1849, you can see interesting rock-formations from the vantage-point of a 100ft/30m spiral staircase.

Those parts of the caves which have not been built over can be seen in the course of a three and a half-hour guided tour. The other cave, Mercer Cavern, was discovered in 1885. Here you can see stalagmites, stalactites and aragonites.
Address
Boyden Cavern
Kings Canyon National Park
Kings Canyon National Park, CA 93633
United States
Phone 1 (209) 736-2708
Hours
June 1 to August 30
MonTueWedThuFriSatSun
Open9:009:009:009:009:009:009:00
Closed18:0018:0018:0018:0018:0018:0018:00
September 1 to May 31
MonTueWedThuFriSatSun
Open9:009:009:009:009:0010:0010:00
Closed17:0017:0017:0017:0017:0017:0017:00
Cost
Adult$12.50
Child 13 & under$6.25
Tips
Guided tours lasting three quarters of an hour; to book in advance tel. (209) 728-2101.
The Moaning Cavern is open all the year round, but the Mercer Cavern only from June to September; at weekends only during the remaining months of the year.
Advance booking advisable; tel. (209) 736-2708.
Attractions Near Moaning Cavern, Vallecito