Its a narrow sandstone gorge which was sculpted by water and light. In some places it can be slippery and you need to know where to put your feet. That's why a guide is recommanded. The rangers will ask for 500KSh p.p. while just after the gate locals will wait to do so for less and for a whole group. If your not going with an official guide you have to sign in and out at the Ranger's Post.