Polish dirt roads in the north are quite easy to ride - sometimes a bit of sand, sometimes nice and soggy. But I haven't been to the Tatra mts, so I can't say whether they are open to the public. Much of it is nature reserve, so the dirt roads are presumably closed. Can't say what it is like on the Czech side of the Erzgebirge, but the Germans usually ban the public from their dirt trails...
Only when we pause to wonder
do we go beyond the limits of our little lives.