Once the home of a hermit and healer who kept an expansive garden of useful herbs and plants, the Herbalist's Hoard appears to have run wild in the decades since their death. The cave and its surrounding plants sits in the hills beyond Caervalle Town, three quarters hidden, and requires either a guide or expert level skills to locate. (A guide can be found in Caervalle Town, if they trust you enough)
Although it looks wild and untended, that appearance is carefully cultivated by the Priestesses who come here to harvest from its Hoard of healing and poisonous plants (which, as is often the case, may be the same plant in different doses) for use in their work.