The rock type is limestone and most of the routes climbed are sport climbing. The sport climbing begins with a 5.9 but the majority of climbs fall in the 5.10 to 5.12 range. Due to its proximity to major urban areas, Mount Nemo is one of the most popular climbing destinations in Southwestern Ontario.
Conservation Halton has implemented a ban on top rope climbing to protect the ancient cedar trees along the Niagara Escarpment.
There are various cave systems running through the rock. Caving is a very popular activity at Mount Nemo, with the various caves offering great opportunities for enthusiasts from beginner to advanced skill sets.