Cedar Creek Canyon is a straight, narrow gorge north of Fort Wayne in northeastern Indiana, where Cedar Creek flows through a deep, forested valley. Formed at the end of the last ice age as a tunnel valley beneath the Wisconsin Glacier’s Erie Lobe, it was carved by pressurized meltwater that cut through the Wabash Moraine. The resulting outwash fan blocked the ancestral Eel River and diverted its upper waters into a new channel, a notable example of stream piracy tied to a broader regional drainage reversal. Today the canyon is valued for both scenic beauty and ecological importance, with protected lands and state-recognized water resources.