When standing at the top of the halfpipe and looking toward the bottom, the frontside wall is the wall you would go up toeside
The halfpipe wall that is in front of the rider. This varies between a regular and goofy-foot snowboarder.
The wall that your toes point to when you're riding straight down a halfpipe. For goofy-footers it's the left wall, for regular footers it's the right. Gap Jump A jump constructed with empty space in-between the takeoff and the landing. Not clearing the gap usually has detrimental consequences.