Lost often does include people on trails. Lost simple means they did not return, which might include they died or where injured on the trail, are lost of a trai

Lost often does include people on trails. Lost simple means they did not return, which might include they died or where injured on the trail, are lost of a trail, change they plans and didn't let someone know, etc. Beyond that, this would be very useful for not getting lost; think Google maps for trails.