As for Kilauea it's hard to get insurance when you buy land in an active volcanic zone (it's cheap though). They are rated 1-5 and IIRC Zone 1 is the most active, ie. the rift zone.
It is amazing the difference in housing prices on the Big Island of HI. A house on the Kona side is 4x the price of one on the Hilo side. Of course, it rains a little more on the Hilo side.
It’s hard, but not impossible.
From 2018...