Deletion of Topo (climbing)

Comment: The page seems to be doing ok as it is and  is not a reason to delete as we have no |deadline.  It seems that the nomination is a drive-by made without any due diligence or consideration of |alternatives per . |AfD is not cleanup
Stance: keep
Cited policy: Wikipedia:Arguments to avoid in deletion discussions (WP:NOEFFORT||WP:DEADLINE||WP:ATD||WP:BEFORE||WP:NOTCLEANUP)

Comment: or merge. With a 5-minute  style search, I was able to locate two books talking about this kind of map and added them to the article.  There are other refs that discuss these diagrams and various groups like http://www.supertopo.com/index.html SuperTopo, dedicated to creating topos. Hence there seems adequate sourcing out there for this topic. Topos are usually a part of a climbing guide, so a merge to Climbing guidebook would also be reasonable. But outright deletion of verifiable material is the wrong course of action per  and 
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE||WP:ATD||WP:PRESERVE)