Kolokol Potatoes July 2008, Talavera de la Reina / Cervera de los Montes Ø 8 x 17 cm Adhesive label and preserved potatoes in a glass jar. i Kolokol (Russian) = bell. Kolokol-1 is an opiate-derived incapacitating agent developed in the 70's in the Soviet Union. The unknown chemical agent that Russian OSNAZ special forces pumped into the theater sieged by a Chechen urban guerilla in 2002, was probably Kolokol-1.