Very Unusual Geology Classroom Chart. Made in Germany and in German. Produced in the Cold War Era. Teaching tool for the geology classroom. Would make one heck of an interesting chalk board. Printed on a very heavy oil-cloth material. Can be written on and wiped off. Mounted on sturdy black wooden dowels. Rolls up and ties neatly when not in use. Ready to hang. 56" wide x 58" long In gently used condition.