Nass Volcano

12.60 km
564m gain
5.00 hours
Level 3.0/5
3.0/5
Difficulty
Moderate
12.60
Distance
kilometres
564
Elevation Gain
metres
5.00
Est. Time
hours

About This Trail

The Nass Volcano, also known as Tseax Cone, is a remarkable volcanic feature in the Nass Valley of northwestern British Columbia, within Anhluut’ukwsim Lax̱mihl Angwinga’asanskwhl Nisg̱a’a Park (Nisg̱a’a Memorial Lava Bed Park). The eruption occurred roughly 250 years ago and produced the youngest lava flow in Canada. The lava travelled down the Tseax Valley, eventually damming the Nass River and creating Lava Lake. The eruption also holds profound cultural significance for the Nisg̱a’a Nation, with Nisg̱a’a oral history preserving the story of the eruption and the loss of approximately 2,000 people.

Leave No Trace

Please follow Leave No Trace principles: pack out all waste, stay on designated trails, respect wildlife, and be considerate of other visitors.

Interactive Trail Map

Elevation Profile

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Getting There

Directions

From Terrace, travel north on Highway 113 (Nisg̱a’a Highway) for approximately 100 km toward the Nisg̱a’a Memorial Lava Bed Park. The park is located in the Nass Valley and is accessible by road from Terrace. An alternate route is available from Kitwanga via Highway 37 and the Nass Forest Service Road.

The Tseax Cone itself is not available for unguided access. The cone is reached through a Nisg̱a’a-guided hiking tour that departs from the Cone Trail access road, approximately 1.4 km north of the Lava Lake picnic site. The guided hike is approximately 6 km and takes about 4 hours, with some steep stairs and moderately difficult terrain. Visitors should arrange a guided tour in advance and confirm current tour dates and access conditions with the park operator before travelling.

Parking

Parking is available at the Lava Lake day-use area, which provides access to several attractions within the park. The Cone Trail access road is approximately 1.4 km north of the Lava Lake picnic site. Guided tours depart from the base of this access road.

Use designated parking areas and do not park along active roadways or block access roads. Parking and facilities are relatively basic, so visitors should arrive prepared with water, food, and other necessities.

Safety & Preparation

  • Guided access only: The Tseax Cone is accessible by Nisg̱a’a-guided tour only. Do not attempt to access the cone independently.
  • Moderate hike: The guided route is approximately 6 km and takes around 4 hours, with hills and steep stairs.
  • Rough volcanic terrain: Lava rock can be sharp, loose, and unstable. Wear sturdy hiking footwear.
  • Stay on designated trails: The lava landscape is extremely fragile. Lichens grow across much of the lava, and a single footprint can damage hundreds of years of growth.
  • Watch your footing: Cracks, loose rocks, steep sections, and uneven volcanic surfaces can create trip and fall hazards.
  • Do not climb on volcanic formations: Avoid touching, climbing, or disturbing lava features.
  • Water: Bring sufficient drinking water, particularly during warmer weather.
  • Weather: Conditions can change quickly in the Nass Valley. Bring rain protection and appropriate layers.
  • Wildlife: Bears, moose, mountain goats, marmots, and other wildlife inhabit the surrounding area. Maintain a safe distance and never feed wildlife.
  • Limited services: The park is in a relatively remote area. Carry essential supplies and do not rely on continuous cell service.
  • Respect Nisg̱a’a Lands: The volcanic landscape is both a significant geological feature and an important Nisg̱a’a cultural and memorial landscape. Follow local guidance and treat the area with respect.
  • Respect the story: The volcano and lava beds are connected to Nisg̱a’a history and oral traditions, including the loss of approximately 2,000 Nisg̱a’a people during the eruption. 
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