Black and White Wednesday: "Sand Castle" by Fedory and Marcos

HowOOOO's it shakin', Groove-ophiles! Only in the Groovy Age could you find horror stories that--in one terror tale--feature botched bank robberies, plane crashes, treks through the desert, vampires, and the entrance to Hell! And the best place to find such Horror-Mood monsterpieces? Why in Skywald's  black and white monster mags, natch! From Nightmare #21 (aka the 1974 Nightmare Summer Special), prepare to face a different kind of..."Sand Castle!"