Limehouse Conservation Area is a smaller park near Halton Hills, Ontario.The Bruce Trail runs through the conservation area. The park is known for the crevices and cave type formations you can walk through and explore. There is also a cool stone bridge and some smaller kiln ruins. If you are visiting during winter it can get muddy and icy so bring your spikes!
https://www.alltrails.com/widget/recording/black-creek-side-trail–149