Great to see lots of focus on the national parks data within OSM. Chimani has also been slowing working on the data behind the scene (mainly for the big parks) and just did a soft release of our own OSM-sourced maps for all our national park apps. For more details: http://www.chimani.com

Also, here’s a video on our app in the Grand Canyon which highlights our OSM-sourced map for the park.

http://www.youtube.com/user/chimaniapps

Regards, Kerry