From Nettle’s Crossing (which is a straight-shot southeast from Oleg’s Trading Post) follow the river southwest until you reach an empty node. Save your game, then travel west, where you’ll hopefully find the Trail in the Hills area to the north of the path.
Enter the Trail in the Hills area and from where you appear along the southern edge of the area, venture east to find a pile of rocks, which hide a Scorched Fragment of a Necklace. Once that treasure is yours, return back west and then venture north until you reach a fork with two paths leading uphill, one to the east, and one to the west. It doesn’t matter which route you take, both lead to the same location. You might want to spell-buff, however, and lead with your strongest character, as a powerful foe awaits uphill.
While it may not be readily apparent, a Ferocious Leopard dwells here, although it’s fond of using Stealth to hide before it attacks. While this cat doesn’t hit much harder than most foes you’ve fought, it gets many attacks per round and has a relatively high Armor Class and Attack bonus. This makes it a dangerous foe, so consider preparing ahead of time with Bless and Shield of Faith, if you have them. Still, if you surround the beast you should be able to cut it down before it causes too much trouble.
Once it’s dead, search the body of an unfortunate Kobold to claim a Shortbow +1. Not a bad prize for such a fight.