This route is called Magic Mushroom after all the mushrooms that were present when I rode it.
The trail is actually a logging road with an earthen base through the dense coniferous forest. If you're following the Lužické Hory - Lausitzer Gebirge - Lusatian Mountains
or the Ceska Kamenice through Luzicke Hory
routes it will seem magical compared to all the climbing you've previously done.
Check out a couple of moss-covered fortifications from the 20th century that dot the path.