Yesterday, Poor Boyz Productions dropped the trailer for its upcoming film, Tracing Skylines. The movie follows several athletes as they embark on their interpretation of the “trip of a lifetime.” For Karl Fostvedt, Max Morello and Khai Krepela, that meant heading to Detroit for a street trip, which will be highlighted in the October issue of FREESKIER.

According to cinematographer jonnydurst‘s Instagram feed, one of the features, a collapsed bridge gap, took “350 cinder blocks, 100 tires, and 4 trailer loads of snow” to construct. The resulting shots can be seen starting at the 1:58 mark of the trailer, and in the feature film, dropping next month.