This is a quick three-hour (ish) hike which you can do if you have half a day free in Petra and don’t feel like seeing any people. You will enter through Siq al Muthlim which is on your right just before you enter the main Siq in Petra, and you will exit behind the Crowne Plaza hotel.
Siq al Muthlim is hard to miss, but its a bit tricky finding Shaeb Gais, so here are the GPS points.
Siq al Muthlim is a really narrow siq and it changes every winter, so its hard to predict how easy or hard it will be, but in any case be prepared for scrambling, declimbing, and some chimneys. You should take some rope with you, just to be on the safe side.
It goes without say that you shouldn’t walk in wadis during the winter.
The siq is wide and easy to walk for the first part, but soon it starts to narrow.
At the very bottom of the Muthlim, just before you exit into the Wadi Mataha, there is a spectacular gallery of niches.
When you see the Nabatean aquaduct, you’ll know you’re heading in the right direction.