Mauna Loa, rising 13,679 feet (4,169 meters) above sea level, is the much larger neighbor to Kilauea volcano, which erupted in a residential neighborhood and destroyed 700 homes in 2018. Some of its slopes are much steeper than Kilauea’s – so when it erupts, lava can flow much faster.
Article source: https://www.huffpost.com/entry/mauna-loa-starts-erupt_n_6384fa96e4b0b7f65309a719