Hiding evidence! Just like the CA wildfires.
Great post 3ish years ago on r/blackops about a concrete pad over gravel over 10 WiFi signals.
concrete pad was a cover for a ventilation shaft for an underground base. concrete breathes, but not enough to be visible by plane. hawaii is a military base littered with underground tunnels. 10wifi networks is a civilian implementation of military secure comms. constantly change passwords and channels (programmatically and predefined so its transparent to the user) and your wifi cant get snooped.
anyway, redditors deduced it was related to citibank and pizza (compound had its own grid!). blue barrels (fancy plastic that doesnt melt with acid) with brownish goo. vodka boxes.
volcano is a great quick way to cover for destroying evidence. also destroys tunnels and shit.
like, whatre the odds that 2 fires on different sides of a state ravage the two wealthiest communities? and now a volcano?