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, its lava can flow much faster.
Article source: https://www.huffpost.com/entry/hawaiis-big-island-gets-warning-as-huge-volcano-rumbles_n_635b1769e4b0cf522df6e714