I was reading Exodus 3:1:
Now Moses was shepherding the flock of his father-in-law Jethro, the priest of Midian, and he led the flock to the far side of the desert and came to the mountain of God, to Horeb. [NET Bible]
From a theological point of view it makes sense for him to be there. The mountain is called the "mountain of God" and later he is, as the shepherd for the people, leading them there to receive the law.
But from a practical point of view it does not makes sense. I was looking at the place with the help of Google Earth (and a kml file I found). It seems to be really hostile from looking at satellite images:
Could there be any practical reason that would be beneficial for him or the sheep to be there? Or was he actively going there to meet God?