I not only have topomaps of the areas I go to, but I usually go get arial photos. They show a lot more detail. USGS has not updated the maps for Alaska since the 40s. The photos show trails, waterways, small ponds and lakes, and recent burn areas that the topo maps don't show. The ,ilitary put trails in all over the state back in the 50s. The topo maps don't show those trails. But I need the topo maps to make sure I'm not in a National Park, or National Preserve. That is the only thing the USGS has kept up on their maps.