Some are on Private Property, some are open to use. Because few climb here, if you keep a low profile its highly unlikely you'll threaten access. I've always been cordial to those I've run into, knocked on doors when ownership was apparent and never had issue with climbing at these crags.
This information is a public crowdsourcing effort between the Access Fund,
and Mountain Project. You should confirm closures, restrictions, and/or related dates.
These crags are scattered around the Iron Gate lake on the very cusp of the Oregon California Border. I included in this section crags closer to the I-5 corridor - but still within this California/Oregon border to avoid making another section for Montague, Hilt and other regional crags.
These are modest rock areas, but outside of Pluto Caves, Hetch Creek Falls and Castle Crags they offer some alternative rock routes if your in the Yreka region.
Most of the Iron Gate stuff is road and lakeside, very easily accessable. For many of the I-5 stuff, parking can be found at the rest area and other alternative off-shoot roads. I've never had to park on I-5 as this would be dangerous and would make me a sitting duck in terms of drawing attention.