Rift Valley : A rift valley is a linear-shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault.
A rift valley is formed on a divergent plate boundary, a crustal
extension, a spreading apart of the surface, which is subsequently
further deepened by the forces of erosion.
Shield Volcano : A shield volcano is a type of volcano usually built almost entirely of fluid lava flows. They are named for their large size and low profile, resembling a warrior's shield lying on the ground.
During a total solar eclipse the solar corona can be seen by the naked eye.
A corona (crown) is an aura of plasma that surrounds the sun and other celestial bodies. The Sun's corona extends millions of kilometres into space and is most easily seen during a total solar eclipse, but it is also observable with a cornograph,