Jahnavi Girl's name meaning, origin, and popularity See the boy version of this name
Map & Aerial Image. Long Valley map, photos, satellite view and comments. Long Valley is a Valley in Lake County, CA with an elevation of 1,083 feet, or 330 meters above sea level. A satellite image of the Long Valley area in Lake County, CA. Click the map image to see more detail and to pan and zoom.
Long Valley Caldera. Long Valley Caldera is a depression in eastern California that is adjacent to Mammoth Mountain. The valley is one of the earth's largest calderas, measuring about 20 mi (32 km) long (east-west) and 11 mi (18 km) wide (north-south), and up to 3,000 ft (910 m) deep.