11.   This was a climbing day, punctuated with beautiful valley vistas and cliffs of lava rock.

12.   To cure your chimenea, place a layer of lava rock or sand in the bottom.

13.   Vance Littlebird, a hugely proportioned Cheyenne healer, scatters flakes of cedar and sweetgrass on a pile of heated lava rocks at the center of the lodge.

14.   Watching the surf crash onto black lava rocks along the highway to Hana?

15.   A field team from the University of Rochester found the fossils in a layer of sediment sitting atop a bed of lava rock.

16.   Etna has been spewing smoke and sending up showers of hot lava rock off and on for months.

17.   Nicklaus essentially took himself out of that hole by pulling his drive into the lava rock alongside the fairway and taking a penalty stroke.

18.   In some areas, these busy routes were being made level, with each passerby carrying handfuls of small lava rocks to fill in gaps between larger boulders.

19.   Pedestrians using the crossing helped turn it into a road, each carrying lava rocks to fill gaps between larger boulders of the volcanic rock.

20.   The children are dressed in T-shirts and shorts or dresses for the girls, and almost all wear bright plastic shoes to protect their feet from the lava rock.