Palatine tonsil Location. Tonsils of this type are situated behind the cavity of the mouth. It is implanted in the lateral wall of the pharynx that is located on either side of the fauces (the passage between the pharynx and the back of the mouth) placed between the posterior and anterior pillars of the soft palate.t refers to one of the tonsils that are visually apparent on the right and left sides at the back of the throat. It is sometimes also referred to as âFaucial tonsil.âIn Latin, it is known as âTonsilla palatinaâ.