Where are horst and graben found?

Horsts and grabens are typically found in regions experiencing tectonic activity, particularly in areas undergoing extensional tectonics. They are commonly associated with continental rift zones, such as the East African Rift, where the Earth's crust is being pulled apart. Horsts are raised blocks of crust, while grabens are the lowered blocks between them, forming a characteristic landscape of alternating elevated and depressed areas. This geological feature can also occur in other tectonic settings, including fault zones.