Many of the trails are fire cuts, Bultaco, Montessa, Husky to name a few!
I grew up riding here, the Mc Dowell's also own property on 18th Ave, Blueberry Acres off 33, Asphalt plant off Collingswood circle behind Wall stadium to name a few.
Fred Mc Dowell Sr and Fred Jr are both passed; the care taker has to be over 80. I believe it was a home owner off West 18th, my grandfather worked for Fred Mc Dowell and those trails all were made by mx'ers.
Back in the 70's before mtb was a thing.