The Sleeping Giant
A mesa peninsula that reads from Thunder Bay as a reclining figure, with some of the highest cliffs in Ontario at its far end.
Updated 21 October 2026

AI illustration
Seen from Thunder Bay across the bay, the Sibley Peninsula forms the unmistakable outline of a figure lying on its back with arms folded, which is why it is known as the Sleeping Giant. In Ojibwe tradition it is Nanabijou, turned to stone. Geologically it is a set of mesas capped with hard diabase over softer sedimentary rock, and at the southern end the cliffs drop about two hundred and fifty metres to Lake Superior, among the highest in Ontario. The Top of the Giant trail runs out along the chest and ends at that edge, a long day's walk with the whole lake below. Amethyst, Ontario's official mineral, is mined nearby.
Highlights
- The Top of the Giant trail - a long walk to some of Ontario's highest cliffs.
- The profile from Thunder Bay - the reclining figure across the water.
- Thunder Bay lookout - a platform on the cliff edge over the lake.
- Amethyst mines - open to visitors to dig, on the road back to the city.
When to go
June to October for hiking, with autumn colour in late September excellent from the clifftops. The full Top of the Giant walk is a long day, so start early. Winter brings skiing and snowshoeing on the lower trails with the high route effectively closed.
Things to know
The Top of the Giant is around forty kilometres return from the main trailhead unless you use a bike for the flat approach, and people badly underestimate it. The clifftop has no railings. Weather on Superior changes fast and the exposed sections offer no shelter. Blackflies in June are severe.
Nearby
Thunder Bay is an hour west; Kakabeka Falls is beyond the city.
Key facts
Source: Wikidata, item Q7539870, read on 18 October 2026.
What to pack for The Sleeping Giant
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Padded shorts - The one thing that makes a full day in the saddle bearable. Find on Amazon
- Spare batteries + cards - Cold and long shoots drain power; never run out at the good light. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
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Where to start if The Sleeping Giant is going on the list.
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.




