Onefour Heritage Rangeland Natural Area is an Alberta Parks heritage rangeland natural area in the South region, 45 kilometres southeast of Milk River. Alberta Parks lists no developed day-use area count.
The official page classifies the site under the Wilderness Areas, Ecological Reserves, Natural Areas and Heritage Rangelands Act.
Onefour is a large working-rangeland protected area where access planning matters as much as the activity itself. Alberta Parks lists hunting as the surfaced activity and links to hunting in Alberta's parks system, regulations, and licence purchasing.
The official page lists the site at 17,672.30 acres, or 7,152 hectares, in the Grassland - Dry Mixedgrass Natural Region. The park-management section does not provide a developed-facility description, campground, day-use area, marked trail network, or visitor centre.
Grazing lease access rules are central. Alberta Parks says some or all of the land is subject to grazing leases and regulatory conditions for recreational access. Visitors are asked to leave gates as found, avoid harassing cattle, and slow down and drive carefully when livestock are near or crossing roads.
That makes Onefour best approached as a map-first, permission-first rangeland visit. Before any trip, confirm access conditions, legal boundaries, hunting seasons, livestock presence, and current advisories.
Plan around hunting where permitted, grazing lease access checks, gate etiquette, livestock awareness, dry mixedgrass rangeland context, map review, and low-impact travel.
Confirm grazing lease access, hunting seasons, licences, livestock rules, gates, maps, advisories, weather, special permits, and Alberta Parks updates.
