Altamira?

Hey all. I'm hoping that someone with better knowledge of pop music than myself might help me here. I'm looking for a song about Altamira, the cave in Spain with all the caveman art inside of it. The song I'm thinking of was from the early to mid 70s, and got airplay on American radio, although not a great deal.

I'm familiar with the songs by Ibio and Steely Dan, and it's neither one of those. It was a very bouncy, danceable European pop sort of song, and I think the band and the lyrics were French, or maybe possibly Spanish. I know that's not a lot to go on, but perhaps someone else remembers this?