If you are hiking a glacier and you want to challenge yourself, ice climbing is an excellent opportunity. As with glacier hiking, it is important that the equipment is in order, so it requires both a guide, crampons, ice axes, helmets, harnesses and ropes - and fear of heights is probably not the best thing to suffer from .... The guide typically finds a suitable vertical wall of ice, where he fastens the hook and rope on top. Then, you will be strapped to one end of the rope, and the guide keeps a hold of the other end, all while you climb up the wall by hammering 2 ice axes, and your crampons into the ice and rappel back down. It can easily be done, even if you have not tried it before, and it requires more technique than strength, but it is pretty crazy!