This “Giant” issue of the Brave and the Bold features two stories. The first is a far-out tale as Batman is transported into the future where he helps Kamandi and the last human remnants battle the Ape People. (The story is written by Bob Haney with art by Jim Aparo.) It even (self) references a Batman comic which the humans use as a fetish. (See below.)
The issue also has a “Secret Six” story, written by E. Nelson Bridwell and Joe Gill with artwork by Frank Springer. The cover is by Jim Aparo.