"AZTEC - A feast of a bar!" - and it sure was, being the only real rival that MARS Bars ever had. Aztec Bars first appeared in 1967, and apparently the TV ads were filmed at a genuine Aztec pyramid in Mexico. I seem to remember an Aztec warrior crouching at the foot of the temple before ascending the stairs, but I'd be grateful for some Criv-ites' confirmation that I'm not just imagining it. Aztec Bars disappeared sometime in the '70s (some sources say the early '70s, others say 1978), though they returned in a limited edition revival in 2000. I bought a good few of them, but they were back for such a short time that it almost seems like a dream.
Ah, the good old days. Strange to think that others will regard today as one of their "good old days" tomorrow. (You know what I mean - I hope.)