Perhaps it could shed some light on the names of the Toa of Stone, Toa of Earth, and Toa of Plantlife.
Kanae Bay -> I recall it was located close to the Le-Wahi region, which is mostly jungle. So I figure Kanae is actually the name of the Bo-Toa. While Nidhiki was the Toa of Air, I doubt Matau or the other Turaga would name a location after one of the guys who tried to kill them. Never mind Nidhiki's infamy as a tratior to Metru Nui before that.
Tiro Canyon - rocky outcropping near Onu Wahi...Safe bet that the Earth Toa was probably the namesake
Motara Desert - Easy, desert on the outskirts of Po Koro...probably the Toa of Stone