Cross Streets: Tretheweys Falls. ** Directions: highway 11 to highway 118 east. Build your home on this vacant lot along the scenic Muskoka River. Enjoy the perfect blend of year round recreation and daily convenience with convenient year-round road access and direct boating access to Spence Lake. Whether you want to fish, swim, or simply soak up the sunshine from your own private waterfront. (id:27476)