Archaeologists find Assyrian siege ramp at biblical city of Azekah

How did Sennacherib’s forces breach the Judahite defenses at Azekah in 701 B.C.E? It seems they repurposed the remains of a 1,000-year-old city wall, fashioning it into an attack ramp https://www.haaretz.com/archaeology/.premium-archaeologists-find-assyrian-siege-ramp-at-biblical-city-of-azekah-1.9115899 #israel_archaeology