Jesalva said he was in the group that spent the night on the picturesque mountain, known for its almost-perfect cone, when the volcano rumbled back to life early in the morning and rocks "as big as a living room" came raining down on them.

NPR: Philippine Volcano Spews Rocks, Killing 5 Climbers

Forget long lines: The stunning volcano is the view from your couples suite for your first three nights at Arenal Kioro Hotel - just add room service and let the fireworks begin.

BBC: Daily deal: Utopian panoramas in Costa Rica