
The back of a frozen waterfall at Ottawa Canyon has a green glow shine through it from light reflection. (Scott Anderson)

Light snow falls in front of a frozen waterfall at Ottawa Canyon in Starved Rock State Park on Feb. 10, 2021. (Scott Anderson)

A view of Ottawa Canyon in Starved Rock State Park from the front shows a solid frozen waterfall on Feb. 10, 2021. (Scott Anderson)

A close up view of the ice formations underneath Kaskaskia Canyon at Starved Rock State Park on Feb. 10, 2021. (Scott Anderson)

A close up view of the ice formations underneath Kaskaskia Canyon at Starved Rock State Park on Feb. 10, 2021. (Scott Anderson)

The back of Kaskaskia Canyon glows green from the frozen waterfall at Starved Rock State Park on Feb. 10, 2021. (Scott Anderson)

Hikers Josh Lentz, of Lisle, and Emily Hay, of Chicago, enjoy looking at a frozen waterfall at Ottawa Canyon in Starved Rock State Park on Feb. 10, 2021. (Scott Anderson)