The same day Mum, Dad and I visited Peachester Cemetery, we travelled along a road giving us a view of the Glass House Mountains.
It wasn't the best weather that day, but the view was still impressive.
After an extensive discussion with Dad, we believe all but the second photograph is Mount Coonowrin, but taken from various directions (some of the photos were taken 20 minutes apart).
I'm unsure which of the Glass House Mountains the second photograph is, so if you know, please feel free to weigh in.
As with many natural formations in Australia, the First Nations Australians have a legend about the mountains. Wikipedia tells me they are located in the traditional lands of the Jinibara and Gubbi Gubbi people.
I don't recall visiting them in my childhood or teens. But I would be surprised if we didn't at least drive through the area and admire them while I lived in Brisbane or when visiting Queensland after we moved away.