1.   All of the dead had deployed in the boulder field.

2.   Cunningham and Vega used radio telemetry equipment to find her den under a boulder field.

3.   Deep ruts, boulder fields and washouts kept us busy.

4.   Over a distance, the boulder fields became short stretches of rock shelving.

5.   The excursion to a boulder field in northern Pennsylvania seemed like any other field trip.