Fissure
Long, narrow crack opening on a planetary surface
Fissure
A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word fissura, which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes.
Read on Wikipedia · Image United States Geological Survey, Public domain
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