Great Rift Valley support its current biological variety. The southern section of the Rift Valley includes Lake Malawi, the third-deepest freshwater body in the world, reaching in depth and separating the Nyassa plateau of Northern Mozambique from Malawi; it ends in the Zambezi valley. Great Rift Valley The Great Rift Valley is a continuous geographic trench, approximately in length, that runs from Lebanon's Beqaa Valley in Asia to Mozambique in Southeastern Africa. The name continues in some usages, although it is today considered geologically imprecise as it combines features that are today regarded as separate, although related, rift and fault systems. Today, the
Geological history of the Chiricahua Mountains creating a vast alternating system of mountains and valleys, or, more specifically, horsts and grabens. These north–south trending structures are the distinguishing characteristic of what is now known as the Basin and Range Province. The Chiricahua Mountains lie within this province and graben blocks are the most common structure found. Extension continues today due to pressure from the San Andreas Fault that runs through the length of California. Extension also led to the formation of more volcanic features. Small amounts of basaltic magma leaked out and formed the San Bernardino volcanic field (San Bernardino Valley) along the southeastern flank of