I also spent hours in a swamp during last winter in 2 meter snow on FTF run thanks to EMSDanel.
What's with you Czech and Slovokian cachers? WhenEVER I go caching with Marcipanek (Czech) we end up in a swamp, taking a "short cut" based on the reasoning of him and his Garmin Colorado. The PN-40 never takes me into swamps...