The most widely told legend of Niagara Falls involves a young woman — usually called Lelawala — who goes over the Horseshoe Falls in a canoe. In the version most closely associated with Haudenosaunee (Iroquois) tradition, she is received by the Thunder Beings (Hinon) who live in a great cave behind the curtain of falling water. The Thunder Beings are powerful spiritual entities associated with storms, rain, and the renewal of the earth. They reveal to Lelawala the cause of a pestilence afflicting her people — a great water serpent lurking beneath the river — and she returns with this knowledge to save them.

The Thunder Beings are not merely characters in a single story. In Haudenosaunee cosmology, they are ongoing presences — grandfathers of the storm who protect humanity from malevolent underwater beings. The roar of Niagara is, in one sense, their voice. The perpetual mist rising from the base of the falls is the breath of the spiritual world meeting the physical one.

It is worth noting that the 'Maid of the Mist' story as popularly told has been significantly romanticized and distorted by 19th-century Euro-American writers, who recast Lelawala as a sacrificial maiden sent over the falls. This 'maiden sacrifice' version has no basis in Haudenosaunee tradition and reflects European narrative conventions imposed onto Indigenous stories. The Thunder Being tradition is the authentic core.