[4gotunameagain]

It's not that dangerous in real time (lava is slooow), especially if you have hills like they do close by to go up on.

[asgeir]

This is from the webcam at the time. https://www.ruv.is/frett/2021/03/21/gigbarmurinn-gefur-sig-o...

[ngngngng]

There have been incidents in Hawaii where people successfully used a garden hose to protect their home from oncoming lava flow.

[schoen]

Also in Iceland with fire hoses (against a considerably larger amount of lava):

https://en.wikipedia.org/wiki/The_Control_of_Nature

(This book is amazing -- highly recommended!)

[dopeboy]

Isn't there a chance a projectile of lava could land on them?