Movie with the last of an alien race at the end?

Just watched Total Recall for the first time in 20+ years, and I could have sworn that I remembered that the last of the long dead aliens appeared – but was completely wrong. I can’t figure out which movie I conflated the ending with. I even have them on a dusty/rocky slope in my head.

My wife thinks I just imagined it, but it feels like a deeper implanted memory than that (no total recall jokes intended!)

Ok. So date wise, I can’t say – late 70s thru 2000 I’d have to guess.

What did the alien look like? This is the hardest part. I could have sworn it was a realistic lizard-like one, kind of like G-kar from Babylon 5, but not as humanoid. I don’t recall if it was clothed or not. I’m wondering if maybe I’m conflating it with the Supergirl Mars stories, but I don’t think so.

The thing that’s driving me nuts is that I was certain it was on the side of a rocky mountain they’d been expelled from, just like in Total Recall.

Could it have been in written form eg Ray Bradbury or even Patrick Moore’s Mars book? Possibly, but I don’t think so.

Just watched The Martian and Enemy Mine, close but no cigar. Similar tropes though, and I can see why Mission to Mars was suggested too.

Being British, is it possible it’s a Doctor Who story? I don’t think so, but you never know.