Thanks for your reply!

So, the arch is made of wild grape vines I cut down... I wish they were alive! Next time I will try something like that.

I was thinking of planting new vines around it to let them grow on the arch tho.

It's just an arch we need to walk through to get to the river... there's some signage coming maybe it'll say "Welcome to the unknown Universe" or some other reference to the hitch hikers guide to the galaxy.

Another epic bike ride sounds fun.