An Unknown Herb

Description
''There's a herb that only grows on the Challenger's Flightpath. It has no name, but rumour has it that the herb possesses powerful healing attributes. We're running low on medicines so I would appreciate you gathering some.''

'' I would go myself, but the piyos in that area have turned quite vicious. While you gather the herbs, perhaps you could clear out a few of the piyos as well. You'll find them around 110 to 120 metres up.''