"Find Horace in The Dust" is an objective in the sidequest The bane in Borderlands 2
Walkthrough
Head out to The Dust and go into Bug Gulch behind Ellie's Garage. Go straight in, dealing with the various Spiderants that come at you. Horace and his ECHO recorder are just a short way in. Listen to the recording and you are off to find McNally's Echo.
