All I can say is my friends in AdLib have looked and asked and there is no evidence, my archive contacts can find no evidence, and there is no rock effect on the 1970-1 blueprints of the Cambodian Ruins.if some one else brought it up, and now I brought it up, maybe, your information on the subject is not correct.
it can't be a figment of two peoples imagination at once. not even when dealing with Disney.
You`re not thinking of the old physical falling rock effect in BTMs earthquake cave are you?