Gantahaz Lake shoreline trail

The municipal map explicitly depicts a complete shoreline loop and places the day-use parking and amenities on the northeast shore beside Highway 39. The chamber describes the signed left turn from Highway 39 north of Mackenzie. Fresh OSM data identify Gantahaz Lake Road ending 24 m from source-loop vertex 111 in that same northeast access area. The existing named Gantahaz Lake Trail is an exactly closed ring; its arbitrary southwest starting vertex is rotated to vertex 111 without changing any source edge. This begins the loop near the day-use access but does not draw a 24 m connector through the parking area. The mapped loop is 3.757 km; the municipal published 4.3 km is retained as a separate approximate published measure.