What do you do with 35 million tons of sand? If you are smart, you harness it for a side gig as a skiing resort. A kaolin mining operation in Hirschau, Germany, named their slag pile Monte Kaolino and opened it for tourists. Now, this is how you take lemons and make lemonade. Tom Scott takes us there to find out how Monte Kaolino came about, and maybe he'll even do a little sandboarding.