I went there earlier today and had a flashlight with me. It was not powerful enough to have a perfect look, but I found what I expected to see: lots of trash 😞 because the oculus is open 24/7 and the park is publicly accessible.
It is not possible to enter the temple itself, so no one has the incentive to keep it clean, but it would be nice to cover the grating with a glass disk and clean the inside before it gets worse.