Natural features in cities' names

[xzmattzx]

What does the natural feature in your city's name look like? Is there an instance where the natural feature doesn't exist anymore?

Natural features could be water features or land features.

I am familiar with the cities of Niagara Falls, on the American and Canadian sides, and how both are named for the famous falls. But it took until just a few years ago, when my brother was driving across the country and sent a picture in our family text, that I realized that the city of Sioux Falls had a waterfall named Sioux Falls. I guess Sioux Falls was just a name on paper until then (kind of like Los Angeles Lakers, Utah Jazz, or Las Vegas Raiders are just nicknames with no attachment to the place where they play).