Cascade_Crawler: I'm not sure I understand your question exactly. See if the image below helps. The black lines are 4x4 roads/trails (what I called dirt roads in my previous post). The green lines are bike/hiking trails. I drew the lines by hand, so these are not exact tracks off my GPS, but...
At the very end of the dirt road that goes up to Lake Isabel, on the left (up hill) side you'll see a garden hose hanging down. Pull yourself up there and you can find what's left of the Red Cross Mine. I have no idea how deep it is, and it's full of water so be careful! The opening does not...