This is true boondocking- meaning this is dispersed camping. The camping is right off 285 along Guanella Pass area. Tons of dirt roads to venture down to find your piece of heaven.
It is super helpful to grab a map of BLM land and public use areas from the ranger stations in Grant or Bailey CO. You can also use The Dyrt! Just be sure you are looking at maps and know where you are because some of this land is private or not open to camping.
Be sure to check out Guanella Pass- the drive is beautiful with tons of hiking! Kenosha pass is just down the way as well- also awesome and hooks into CO trail hiking.