{{Short description|Lava dome volcano in Imperial County, California}} {{Infobox mountain | name = Red Island | image = Salton Buttes - Red Island from Rock Hill.JPG | image_alt = | image_caption = The two domes of Red Hill | elevation_ft = -137 | elevation_ref = | prominence_ft = 88 | prominence_ref = | range = Salton Buttes | location = Imperial County, California, U.S. | map = USA California | map_caption = Location in California | map_size = 200 | label = | label_position = | coordinates = {{coord|33.200201|N|115.611706|W|type:mountain_region:US-CA_scale:100000|format=dms|display=inline,title}} | range_coordinates = | coordinates_ref = | topo = USGS Niland | easiest_route = Walk }}
'''Red Island''' (or '''Red Hill''') is a lava dome volcano in the Salton Trough, and part of the Salton Buttes, the only active volcanoes in Southern California. It is located in Imperial County, California. It contains two lava domes, Prospect Dome and Alamo Dome.<ref>USGS Topographic Map 7.5 Minute - Niland</ref> The domes have been dormant for 2,000 to 8,000 years. The saddle between the domes, about {{convert|50|ft}} below the summit of each dome, is a parking lot for county park visitors.
In around 2006-2007 the island became connected to the mainland due to the drying up of the salton sea and being close to the Alamo River only served to accelerate this process and by 2022 the island was surrounded on three sides by land.
==References== {{reflist}}
==External links== *[http://www.icpds.com/?pid=2576 Imperial County PDS website for park]
Category:Volcanoes of California Category:Lava domes of the United States Category:Volcanoes of Imperial County, California Category:Quaternary California
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