Petroleum seep
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A petroleum seep or oil spring is a place where natural liquid or gaseous hydrocarbons escape to the Earth's atmosphere and surface, normally under low pressure or flow. Seeps generally occur above ei
Naturally occurring oil seep near McKittrick, California, United States.
Petroleum seep near the Korňa in northern Slovakia.
Tar "volcano" in the Carpinteria, California, asphalt mine. Oil exudes from joint cracks in the petroliferous shale forming the floor of mine. 1906 photo, U.S. Geological Survey Bulletin 321
Tar bubble at La Brea Tar Pits, California
Eternal flame
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An eternal flame is a flame, lamp or torch that burns for an indefinite time. Most eternal flames are ignited and tended intentionally. However, some are natural phenomena caused by natural gas leaks,
Petroleum seep
…2022. Natural products associated with seeps include bitumen, pitch, asphalt and tar. In locations where seeps of natural gas are sufficiently large, natural "eternal flames" often persist. The occurrence of surface petroleum was often included in location names that developed; these locations are also associated with early…
Nizhny Novgorod Kremlin eternal flame memorializing losses during World War II.
A chancel lamp hangs above the altar of St. Matthew's German Evangelical Lutheran Church
Prismatically broken eternal flame at World War II memorial in East Berlin
Eternal Flame in Sarajevo