Complex sentence: The rock is located towards the centre of the Temple Mount, an artificial platform built and expanded over many centuries, the current shape is the result of an expansion by Herod the Great on top of vaults over a hill, generally believed to be Mount Moriah.
Split into simpler sentences: The rock is located towards the centre of the Temple Mount, an artificial platform built and expanded over many centuries. The current shape is the result of an expansion by Herod the Great on top of vaults over a hill, generally believed to be Mount Moriah.