Ah Richard. This where you get off the hook work wise! And it costs nothing.
Instagram is for everyone else to post their bushwalking photos (it is I-phone photos only), not just you. Its self-maintaining. When you post a photo, you # what pages you want it to go on, plus add a physical location and a comment.
From my point of view, I 'follow' the page and get notified of posting. I can see all the photos posted in one place and if something looks really interesting I can research further and go walk/climb it.
People posting just need to be disciplined to post one photo (or a collage) and to give a description of where it is. I've followed a few outback/camping pages and there were some great photos, but I had no idea where they were.
When you post from your phone onto Instagram, it also asks you if you want to post to your own Facebook page. But you can't post to Facebook and include Instagram.
I think you said you had a few contacts at Facebook? As Facebook now owns Instagram (paid $1b for it which was shared between the original 10 creators), maybe they can help out?