Hay River NWT parks and trails includes Great Slave Lake (second largest lake located within the borders of Canada), the Waterfall Highway and the Hay River Territorial Park to name a few. When exploring the Hay River Northwest Territories parks and trails please be mindful of others, the landscape and the environment. We ask all locals and visitors alike to leave all natural areas clean for the next person. Leave no trace behind. The Northwest Territories is also rich in wildlife. Please do not feed nor approach wildlife.