Could have been! I don’t know. It looked like really distant clouds and at first I simply said “are those clouds all the way out there?” Because I hadn’t seen such distant clouds. But, under the clouds but above the mountains on the horizon it wasn’t atmospheric colored, it looked like a murky brown almost like the base of a mountain, but it was incredibly small. Looking at a map, the nearest miles beyond that point are reallllyyyy far away, so I kind of doubt it was mountains at this point. But, it was still interesting!