Lac de Montriond

And we are starting today's adventure with something that is absolutely mind-boggling, quiet, and slightly eerie, but completely beautiful.

We are heading down the valley from Avoriaz, just past Morzine, to the spectacular Lake Montriond.

This is the third largest lake in the entire Haute-Savoie region, and in the winter, the water temperature drops to freezing, and a massive thick sheet of solid ice completely seals the surface.

Underneath that ice lies a completely silent, crystal clear world, and you can actually dive into it.

The Lake Montriond ice diving is just spectacular.

If you've ever wanted to experience absolute silence, this is where you go.

You get dressed up in these heavy-duty professional dry suits, full face masks, and antifreeze breathing regulators.

It is a proper outer space experience.