This image is of a group of tourists viewing the sites below the surface of Kitch-Iti-Ki-Pi Spring, near the town of Manistique, Michigan. It is part of Palms Brook State Park. Because the water flows fast and continuous, it is very clear and allows viewing of numerous submerged objects, flora and fauna.

The caption states:

KITCH-ITI-KI-PI SPRING

Near Manistique, Michigan

Kitch-iti-ki-pi, an Indian name meaning “Great Cool Water”, is 400 feet long and 200 feet wide. It is fed by more than 20 bubbling springs and so clear are its waters that a coin dropped into them may be seen zigzagging to the bottom 60 feet below.

–This card is dated 1951.