crevasse
CREVASSE!
"In anatomy, a fissure is a deep groove in any of various parts of the body." "The scientists were studying a deep fissure in the ocean floor." "Steam was erupting from a new fissure in the area of the geysers."
The medial longitudinal fissure divides the brain into left and right hemispheres.
fissure
Another name for deep gorge is canyon or ravine.
The scientist discovered a deep fissure in the earth's surface, evidence of the tectonic plates shifting below.
The human brain has a transverse fissure. The fissure is a deep line that separates the cerebrum from the cerebellum.
a groove is called a sulcus, but a deep groove is called a fissure.
A deep fissure in the Earth's surface is commonly referred to as a "rift." Rifts can occur due to tectonic forces and are often associated with volcanic activity and the formation of new crust. They can vary in size and depth, with some notable examples being the East African Rift and the Mid-Atlantic Ridge.
Inter hemispheric fissure.
Crevice, fissure
fjord