This is a pretty short drive from Boulder (or Denver) but since you can’t make reservations at this small site (15-20 sites), so plan to get there as soon as you can after it opens. The site is lovely and right along lakes with snow-capped peaks in the distance. A friend said she saw moose and beavers in this lake but I’ve only ever seen deer. There are vault toilets but no water so bring some and/or treatment methods.