Partially excavated pyramid

I was once visiting some friends in Guatemala, and we all went out to some park in the middle of nowhere. It wasn’t a tourist place or anything, it was just a bunch of hills. I walked up one of the hills and looked down to see that the other half of it had been excavated to reveal the steps of a temple. In fact, all the hills there were covering buildings because that place used to be an ancient Mayan (?) town. There just wasn’t enough funding/interest to excavate it all, so it was just a park of hills.