If I would have known I'd hit the front page of HN, I would have added more content :) But I agree, there is plenty of good information already out there. For photos, I can probably find Creative Commons versions on flickr. I've already asked about a few and people are surprisingly generous.
And good point about The Narrows. I should have that info on there.
"If I would have known I'd hit the front page of HN, I would have added more content"
You did submit it, so not much of an excuse! ;)
No downside to adding loads more content, whether for a Show HN or for the general well-being of the site regardless of HN. Go for it. Would be great to have more photo-oriented hiking sites out there.
And good point about The Narrows. I should have that info on there.