Almost every day that I was in the area, the clouds moved in quite early on Cotopaxi. However, if you were out by dawn, you got a pretty good chance of seeing the mountains. On this particular day, we first had to ascend a bit to get above the clouds and then, looking back, I saw this.
A few hours later that same day, we climbed Iliniza Norte mostly in the clouds, with the occasional glimpse when it opened up a bit. I didn't even bother taking a picture on the summit.