Mach 1 is a great trail that takes you from the Paradise area to East River on the Conundrum trail.
You'll see a gate entrance to your right on the Conundrum trail down a steep face; that's Mach 1! There are often bumps if not fresh powder and in the early season you can find some sticks and stones to bash your skis with.
If the rope is down it is an option to air onto the face if you have speed but you should check your landing.
You can ski the left or right side of the trail to get into some trees.