The Pyramid Lake Reservation is about an hour’s drive northeast of Reno, Ne- vada. As such, it lies close to the major isogloss boundary that separates Oregon Northern Paiute (including Bannock) from Nevada Northern Paiute (Paviotso). The lake, a remnant of ancient Lake Lahontan, is home to the endemic Lahontan cutthroat trout, known locally as kuiyui, and is a popular fishery.