Mount Hazalo, also known as Azalo, or Ayelu is an isolated, rhyolitic stratovolcano in eastern Ethiopia.

Located in the Afar Region, near the South of the towns of Āfdem and Gewane, and has an altitude of 2,145 metres (7,037 ft).

Here they prospered until their wealth led them to hold weddings and feasts during Ramadan; for this Allah is said to have sent a famine and plagues on them.

He notes that this mountain was the object of an annual pilgrimage by members of the Afar people, who travelled from as far away as Daoe in order to climb to the summit where they would pray for good health and success in war.

However, an earthquake and InSAR study conducted by Derek Keir and colleagues shows that a magma intrusion around 5 km (3 mi) deep and 8 km (5 mi) long emanated away from the volcano and intruded near the eastern side of neighboring Adwa in May 2000.