Hi Graptemys,

I made a 3 week trip trought the US and Canada and made notes (Osmand -> Audio note) and GPX recordings along the way, which I then put into OSM on "a rainy saturday". 
The tunnel is an actual closed off tunnel on the Mont Royal. I don't see what's weird about that bench.

All edits are based from my own observations, no data sets involved.

Thx for checking though!