According to Mashable:
"There aren't many people here," the hiker says in Spanish, with the sound of the waterfalls in the background. "Beautiful, the volcano there..." At which point there is a very honest, very surprised, "Wow."
I'm assuming that this was the hiker who was reported missing, but was found safe later on. I'm not sure I'd managed such a restrained "wow", tbh. I think there'd be a few more choice words...
Compare & contrast this reaction to the eruption of the Santiaguito volcano in Guatemala:
Even this is a bit too sedate a reaction!