Wollie
Block

The pointy triangle is steeper on one side so you can choose your launch angle.

Ride at it fast and hit the angled face while jumping in the air; your board will follow your feet up and over. Hit it as fast as you can for a bigger launch.

It’s hollow underneath with a gap wide enough to direct your skateboard through the tunnel while you jump off, over and land on it again.

So much fun to be had from such a small simple structure.