It's been awhile since we have explored Marble Rock, so long that I thought it was Crystal Rock. There is lots of white crystals on that trail, thus the name sake Marble Rock.
Here is a few links to those trails
https://www.alltrails.com/parks/canada/ontario/marble-rock-conservation-area
https://cataraquiconservation.ca/pages/marble-rock
https://ontariohiking.com/marble-rock-conservation-area/
This is an interesting read and some great pics.
Next time we explore there will add some comments to this post.
#BeTheAdventure