I work in the Urban Building and frequently go to the roof to escape the office for a bit. I discovered another path to the roof was this stairwell with landings made of sheet metal. They are warped so that when you walk on them they make booming sound that echos through the hall. Sometimes I'll linger on a spot just shifting my weight back and forth to hear the sound over and over. Though it sounds like I'm stomping in the video, I'm just shifting my weight back and forth. I love that when I make these sounds I can feel the reverberation.