Roller coasters are now thought of as quintessentially American, but they had European predecessors (even full vertical loops as early as 1846!). Were there ever any in the Soviet Union or other Eastern Bloc countries, either of the old-style wooden type or the post-1975 tubular steel type?

EDIT: From an answer in a much earlier thread, I've learned that there were, although as you'd imagine they were never as highly developed as in the West.