Ambiguous post since this can be different for everyone. But I look at elevation changes and general obstacles.
I say the western 1/3 or so of the Lake Superior Trail in the Porkies.
Edit for some details: All the steep embankments leading into Presque Isle are nuts. Just huge sudden stream banks with crazy steep sides. No real path in spots, just climbing on roots.
The Expanse has a vibe.
Do the boys ever talk about the Expanse
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