i show this to my 6th grade class about 17 year ago and the student love it . i love it and too . the story of the termite and their interaction with their environment be amaze . the cast of creature be deep and they all play their part well . the battle between the two cold blood titan be truly classic footage . alan root have do some incredible camera work and this should have win the best documentary oscar . the copy i have doesn not have orson welles narrate it ( derek jacobi ) and it isn not call the mysterious castle of clay and just castle of clay . this make me think that it must have be do with welles add for star power and an oscar push . i be lucky enough to find this vhs just recently and it be now my child favorite movie . they bring it to the late family gather instead of a disney movie . if you can find this movie you be indeed lucky .