It happens. Times past they’ve used buckets of seawater to save villages from encroaching lava. Icelanders are built different.
Well back in the 1990s, Tommy Lee Jones and the LAFD used jersey barriers, fire trucks, and knocked a building over to stop a lava flow from demolishing the west side of Los Angeles, so I’d say we’re pretty impressive too.
Fun fact, in California where the action described takes place, they are officially called k-rails, not jersey barriers. Had to double check wiki to confirm CA predated NJ where I learned about Ontario Tall Wall, which was mentioned but described so…