Mixed feelings on this one, as the protagonists seem to be a curious mix of scientists and obsessive-compulsive thrill seekers. What I mean is, if someone spent all their time chasing and documenting structure fires, declaring that they could care less if they died, but only wanted to get as close to the flames as they could so they could feel the heat searing their skin, one might opine that the couple quite possibly needed to seek out some sort of counseling or therapy. Granted, when one finds a job doing something they love, then it's really not work, but a passion, however, IMO once fortune and more importantly FAME start to enter the picture, then, important safety line can start to be crossed, as the "go BIG or go home" mentality begins to creep into the mix, with "scientific advancement" being the excuse for taking bigger and bigger risks, when the adrenaline dump may actually be what is being chased.

The narrator touches upon this several times, without going too deep into it, as she notes how the couple, but more notably Maurice, started perfecting the mythos of his skill and expertise, (note how on the one video shown, only HIS name was on the credits) when, to be honest, a lot of their survival seemed more like "dumb luck" for want of a better phrase, until, sadly that luck ran out.

Katia seemed more grounded, in that she would get ticked off when they survived a close call, but, alas, I do believe she was truly in love with Maurice, and would follow him anywhere, even to her own peril. I think she was sincere, when the horrors of the one volcano's destruction motivated her to want to do SOMETHING to try to figure out some sort of early warning system, however, that desire, shifted their perspective to the more dangerous grey volcanoes, which directly led to their fate.

Beautiful cinematography, and a lasting legacy, with Miranda July providing the perfect tone for the narration.