Slide down close to the mine, and then jump through the gold. Go over the little triangle immediately ahead of you. Drop down into the next crevasse, get the gold, and then go over the big hill. Build up some speed on this hill. (Hold arrow key uphill and jump) You should go flying high. Land on the farthest left platform. However, if you hit the platform while moving left, you will die. Have some downhill (to the right) momentum when you hit the slope. Repeat the process you performed on the other side. This time, when you jump up the big hill, shoot for the exit.