Horse Auction in Colorado (May)

Is anyone aware of a large horse auction that is to be held the weekend of May 9-10 or May 16-17 in Colorado?

I'm not sure about CO but there is a BLM Mustang adoption going on not far from me in OK this weekend they are offering incentives to adopt older mustangs 4yrs and up. 500$ to be paid in a year sounds like a pretty good deal, we are going to see the mustangs but unfortunately can't adopt right now.

Yes, the Brighton Horse Sales in the Denver area.. Usually some good stock will go through there!