If you want to ski down the mountainside, you'll need to make your way to the top of it first. Jump on Boulder Ski Lift and enjoy the ride up.
To explore this mountainside transportation system, make your way to Stateline. There are loads of other things to see in the area, such as Casino at Harrah's Lake Tahoe, Casino at Harveys Lake Tahoe, and Golden Nugget Lake Tahoe Casino.