Rolling in the deep: An enantioselective synthesis of a marine antibiotic (−)‐atrop‐abyssomicin C (see scheme) is described. The key steps of the synthetic sequence are the application of dual catalysis in the formation of the cyclohexane core, the gold‐catalyzed formation of a tricyclic spirotetronate unit, and a highly efficient eleven‐membered ring closure by a Nozaki–Hiyama–Kishi reaction.