Ku Klux Klan

Stapleton
David Wilson / CC BY 2.0

Voting closes tonight for Stapleton property owners in a referendum to change the name of the neighborhood.

Activist groups like Rename Stapleton say residents have been trying to change the neighborhood’s name since development began in the 1990s.

Luke Runyon / KUNC

In the foothills outside Longmont, Colorado, tucked high in a narrow valley, sits an ugly, cement slab. It's the size of a train car and juts out into North St. Vrain Creek, a shallow alpine stream that serves as the city's main drinking water supply.

A tiny sign greets hikers as they pass the structure. It reads: "Chimney Rock Dam." A small arrow points to the right.

What the sign doesn't tell you is how that cement slab ended up there.