"Adventure destinations that slip through the cracks"
https://news.ycombinator.com/item?id=7762095
From the submission title I figured it was just the usual travel spam, but after looking over the site and not finding you selling anything, I left it unflagged. I only visited the site to make sure it was spam before flagging, so it was a close call.
Though adventuring sure sounds like fun, unfortunately, I'm not in your target demographic.
I really don't know how to reach your desired demographic other than the obvious methods (SEO, A-B testing, cross-promotion with related sites/services, contributing to related forums, gathering email addresses of interested people for mailings, ... and just about everything else patio11 regularly tells people to do).
What kinds of things have you tried so far?