28 det.

28 det. is an unlisted video on the County Bluff YouTube channel, which is found by translating the first line of hexadecimal in the description for Wall of dust, which was edited into the description a day after the upload. 28 det. was uploaded on Dec. 22, 2019 and is 8 seconds long.

Analysis
Audio from this video creates a spectrogram which reads

To st28 To begin. first loc

After inforrmation [sic] is recieved [sic]