Where do you get the trilobite keys for Mardek 2

Trilobite Keys

The Arena is hidden away in Cambria, a secret village of trilobites deep in the Trilobite cave. To enter this cave, however, you need four keys... Their locations are as follows:

Trilobite Key I is in the Tainted Grotto. There's a little pool of slime south of where you battled the Saviours, in which it is hidden; the Map will pinpoint exactly where.


Trilobite Key II is randomly dropped by zombies in Canonia (but NOT Goznor). There's a chance that each one you defeat will drop it, until you get it. If you defeat them all and don't get it, exit the area and return; they'll respawn.


Trilobite Key III is in Social Fox's Tomb somewhere (check the Map).


Trilobite Key IV is given to you by Gope in Goznor's inn while Canonia is under attack, IF you spared him earlier.