Really enjoyed making these figures--I took a quick personal trip to Iceland to get the photos and the weather was cloudier than ideal for clarity but very dramatic.

Want to repeat the acknowledgments: many thanks to S. Sutton + others who ran the UA photogrammetry workshop last fall (S's SOCET SET help vital to final paper), and to A. Hodgetts, C. Gallagher & J. Smellie for science discussions/review. HiRISE team DTM of this area by K. Akers out in Aug release!