Jamesdeluxe wrote
That looks fun. Did they mechanically remove all the rocks?
Why yes, yes they did. I call it the giant BMX track.
There are a few rocks but they reside in the creek beds. A few have been strategically relocated to make rock gardens, jumps, etc. I don't think any of those areas are shown in that vid. FWIW they are riding mostly the same mile or two of trails in all those shots.
At any rate, the trails are built on a number of bluffs that are carved out of the upper plateau down to a bay on Lake Ontrario. It's actually mostly really steep, but the bike trails have been bench cut into the sides.
I don't know where all the rocks are, even the bedrock. If you dig down you don't hit it readily. It's deep, deep layers of sand and clay.
It is completely opposite to what you posted in the other thread.