The trail starts out as a gradual climb along the right side of the canyon with few obstacles. It gets steeper for a bit when it switches to the left side in a wide sweeping turn. There is not much beyond the grade to impede your progress. Once you reach the high point of the trail it winds through the pion trees for a ways until you come to the trail junction with the West Ridge
At this point the Tunnel Canyon Trail drops to the left towards Otero Canyon
. You are immediately greeted with a series of rock steps, which will be a recurring theme the whole way down. The largest of the steps are those first ones and there's another large set near the middle of the descent.