What is "topoquest"

TopoQuest is a free web mapping service built on open source software that provides internet-based topographic maps for most of the United States.

The site is one of three internet services used by Wikipedia for providing topographic maps. It arose to prominence in May 2008 after TopoZone through its new trails.com owners required payment for access to its maps. TopoQuest map links are the same as Topozone's except for the difference in the domain.

It is operated by Ryan Niemi in Klamath Falls, Oregon.