Mars--2237! A scientific team exploring ancient structures on the Plains of Elysium is missing. You are part of a UN military/science team sent to find them. What horrors lie beneath the eons-old pyramids? The Martians who built the mass driver on Mons Olympus or the Face at Cydonia? Or an ancient horror reawakened on the Red Planet? A futuristic Call of Cthulhu event by William A. Barton, designer of Cthulhu By Gaslight and other CoC products.