Every hour on the hour during Winter 5-11 pm.
This volcano may look little and unimpressive, but it is hands down my favourite entertainment in Las Vegas.
The first time you see it, it starts off a bit uninspired with a meagre fog and red lights, but the water, flames, fog in conjunction with the hyped soundtrack makes the eruption rather thrilling. Have patience, it gets better. Don't you walk away until ALL the lights go off.