"Recently I've been really into old maps made by medieval explorers," writes Eleanor on her blog. "I thought it would be fun to use their historical design style to illustrate our current adventures into unexplored territory."
She completed the map by using data from the Mars Orbiter Laser Altimeter (MOLA), which includes topographic imagery from NASA, and cartography from the USGS Astrogeology Science Center. I really like the map's old time-y appeal. The Red Planet has never looked more otherworldly.