Spatsizi Plateau Wilderness Park is one of British Columbia's largest and most significant parks. Spatsizi Park and Gladys Lake Ecological Reserve were created in 1975. The Park is located 200 air miles north of Smithers, British Columbia. This area, over 3600 square miles, is not accessible by road; the only access is via air or an extensive journey by river boat, pack horse or foot.

Spatsizi encompasses three major vegetation zones: alpine tundra, spruce-willow birch, boreal white and black spruce forest. The park spreads across two broad physiographic regions: Spatsizi Plateau and Eaglenest Range. The Plateau is a rolling upland that extends in a broad curve from Mt. Brock in the northwest, to Tuaton lake in the southeast. Elevation in the Plateau ranges from 1600m to 2000m. The mountains to the southwest are the Eaglenest Range.

The Eaglenest Mountains are rugged and alpine glaciation produced cirques, tarns, and hanging valleys. The highest peak is Mt. Will at 2500m. The river drainage includes the Spatsizi River and Upper Stikine. The scenery and terrain make Spatsizi park an excellent place for quality backpacking, horseback riding, paddling, and fly-fishing.