British Columbia’s Challenger Map is by no means the only very large relief map to be hidden away in storage. The San Francisco Chronicle has the story of a relief map of California that was once displayed in San Francisco’s ferry terminal. Formally called Paradise in Panorama at the time, it was far larger than the Challenger Map: the article says it was twice as long as two football fields, which would put it at 720 feet (220 metres), or eight times the size of the Challenger Map along the long axis. Unveiled in 1924, the map has sadly been cut into sections and held in storage since 1960, with nowhere to display it and no funds to restore it. The Chronicle calls it the quintessential white elephant: “too valuable to scrap, but too expensive to keep.” Thanks to M. for the tip.