Deadwind Canyon Ambush

Publisher's blurb:

Two crushed wagons block the dusty road, the horses that once pulled them dead and covered in blood. The contents of barrels and crates have been scattered wildly.
Wagon wheel ruts cut through the dirt, following the path as it winds its way through this desert canyon. Jagged rocky outcrops tower over those below, covered with shale and dry bushes.
You can hear the buzzing of flies, and cries from vultures circling overhead.