Directing Gail Willumsen Directed Unfurled 2025 Out Loud 2020 The Science of Interstellar 2014 Ultimate Mars Challenge 2012 Secrets of Stonehenge 2010 The Noble Horse 1999 Lost Ships of the Mediterranean 1999 Other Credits Volcano: Nature's Inferno Producer 1997 30 Years of National Geographic Specials Producer 1995 Agent-readable