Were is slough creek on wolf quest?

There are four dens in WolfQuest on Slough Creek. One is a rock-like den that's over on Saddle Meadows, one is another rock-like den on Aspen, one is a tree den over by Bison (the place, not the animals, hehehe), the last one (this is the "secret" den) is in the middle of the one near Bison and the river. I hope that helps you. :)