S Vanarts
Used to fly all over that area until it was turned into a WILDERNESS.
I believe your red marker is actually an old dirt road. Could be wrong. Have not been there in over a year.
BUT - Go from you red marker left to the green arrow then diagonally up and left to that small pond. Enlarge the detail and there IS an old strip just above the right side of the dam. One way in - one way out - windy in the afternoon.
Paradise Flat is a few miles east of this strip.
EDIT

The other map that is posted is of a private strip further north on the back side of Mt Hamilton. END OF EDIT
Friend of mine used to take Cessna 310 into Paradise. Before it was all converted to wilderness - we would land - taxi back - and get out just ahead of a guy with a jeep with a shotgun. Used to claim it was his but the 310 pilot said he just did that for the real owner. If any of you ever find it and go for it - there is an almost invisible pipe that stood up about 15-20 feet tall real close on the right.
There are several others back there but are all private. I used to get permission to go into one of them on the south side of a large valley.
One interesting on was a mine where you had to turn uphill rather soon after getting on the ground.
We used to land at several "straight" dirt roads - but did not stay long.
There are some old mine head works back there for those that like to get in low.
PS: We did it all on teeny tired Cubs and Champs. Most pilots out of the old Amelia Reid school were regulars back there. Good fishing at some.
It is nice to know where they are - JUST IN CASE.
Might be able to show ya around if I am feeling OK.
Chris C