Streetsblog's Angie Schmitt popularized the term "parking crater," and she explains it simply: A parking crater is "a depression in the middle of an urban area formed by the absence of buildings."

Different types of "meteors" left behind parking craters in the 20th Century -- sprawl subsidies, the erosion of manufacturing, highway building. Whatever the cause, parking craters absolutely destroy sections of downtowns and make the environment more inhospitable and unattractive for people. In these areas, there is virtually no street life. In warm weather the asphalt makes the air more oppressive. It's hell on earth. It's a parking crater.

In this Streetfilm we talk to advocates in Cleveland, Dallas, Hartford, and Houston about the parking craters in their downtowns -- several of which have been contenders in Streetsblog's annual Parking Madness tournament -- and why these cities have such bad craters.

A final note: If this Streetfilm is well received, we intend to do a follow-up film looking at the flip side -- cities that have undone their parking craters by adopting better policy.