The fact that Mauna Loa’s inflation started a year before the Pahala swarm argues against Pahala being the feed for Mauna Loa. Mauna Loa has its own deep magma source, and has no need for magma from Pahala. But in 2014, in response to a magma surge into this liquid zone at 60 km depth, which none of the three volcanoes could handle by themselves, more magma started to move up here.