If you like a tough day hike, with a lot of climbing, and a LOT of mud, and you aren't too worried about whether you get a great view at the end (you may, or it may be clouded over), this trip is worth it. For me it was wonderful, for my girlfriend, not so much.
A few notes: The trip up is strenuous. You should be in decent shape. You don't need to be Atlas, reborn, but if you are out of shape, you may not make it.
Have appropriate clothing and accessories: I recommend sweat pants, and hiking boots. You will also want to bring a liter of water per person, and probably some food for the top. We brought light jackets for the top too, but didn't need them. Finally a small backpack is good. Someone on our trip came with a canvas, over the shoulder bag, and it really didn't work given all of the climbing.
We saw some people go up without a guide, but I would strongly encourage you to have one (and they are theoretically required). A guide will get you where you need to go, and just as importantly get you back.
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