Analysing terrain data
The exposure grade does not take into account objective hazards (stone fall, seracs, etc) but only the consequences of the skier falling.
Low Exposure (E1): Exposure is limited to that of the slope itself. Getting hurt is still likely if the slope is steep and/or the snow is hard.
Medium Exposure (E2): As well as the slope itself, there are some obstacles (such as rock outcrops) which could aggravate injury.
High Exposure (E3): In case of a fall, death is highly likely.
Extreme Exposure (E4): In case of a fall, the skier faces certain death.
Ride down Dave’s Wave or off the back of Dragon’s Tail and look for a traverse track heading to your left.
Follow it for a while and you’ll eventually find yourself atop Hole in the Wall.
While not the most original name of the features listed here, Hole in the Wall is exactly that; a massive cave through the cliffs that lie above Twin Lakes.
The line starts with two fun, fairly steep bowls that both lead to the tunnel and the apron below leading to Tamarack Lodge.
Hole in the Wall is not in the Ski Area Boundary so there is NO lift access from the bottom.
Prepare for some potentially heinous snow, this line faces southeast and receives a lot of sun, it also avalanches often and once you’re inside the tunnel the snow is almost always miserable.
The run out can be decent but don’t count on it, which means we highly recommend keeping it under control and the speed down so as to not be caught off guard by less than ideal snow conditions.
Don’t let these notes discourage you though, Hole in the Wall is one of the most unique lines you’ll ever ski and a must for any backcountry enthusiast visiting Mammoth.