The story goes that as a child, Krishna liked butter so much that he would steal it from his mother. There are many stories about this in Hindu mythology. Here is a link to a cartoon in English about baby Krishna and butter. The rock is famously lodged in place despite many attempts, including the notable 1908 one that involved seven elephants, to push it down the hill. Here’s another pic from a different angle with people nearby for perspective:
My guidebook was not too useful as a map at this point. I meandered around the largely unlabeled park to see if I could find the structures from the book. I think the next place I saw is called Tirumurthy Cave, carved into the hillside rock.
Note the lingham below. Incense and candles were recently burned here. I also saw visitors praying at some sites. These temples are still used!
The terrain was dry and the day was hot and sunny. I kept going, despite being confused on exactly where I was and what I was looking for. My map insisted that there were many structures here and I found several. It is very possible that I missed some, too, but I really enjoyed walking around and not knowing what was around the corner. It was not very crowded and if it hadn’t been for the scattered litter I would have felt at times like I was discovering the place.
I went back down to the driver and we headed to the next site a short drive away.