People,
Here is a Moon Video entitled Solid Evidence of Intelligently Made Objects On Our Moon! ~ Apollo 11. Now, this is upoosed to be a hollow planets list, so let's look at the opening. There are no rods leading up to it, so it looks like an opening for a flying object, but not an opening to a hanger. It can only lead to the sub surface, some cavern world on the Moon, perhaps.
At 1:37, he shows it. By 5:10, he has nice, darker contrast and he traces the opening.
Cheers!