We will collect trail maps offered by park services and use dots to mark our favorites among them. otm 
Trail maps and metadata go here.
pages/diagrams-as-base-model/data/trail-maps
We merge these diagrams with others and then upload the combined index here: Diagrams as Base Model
pages/trail-maps
http://simnet.ward.asia.wiki.org/assets/pages/trail-maps/import-trails.html