1.38/0.68 km. looks nice...

Read this thread. You definitely found a big chunk, but it is a bit if dust introduced during the copying process.

i dont think so. looks like a hole.

Hello, anonymous, and welcome to Google Moon!

"Not all that glitters is gold". Things are not always what they appear to be, anonymous. At first glance, it's true that the object you've found looks like it could be some feature on the surface of the Moon, but I doubt it, for two reasons: First, look at the shadows on the East rim of the crater Bessel, 42 miles to the SW of your object, in the same piece of imagery as your object. This indicates that the Sun is to the East. Because of the Sun angle, the West side of Bessel is brightly illuminated. Now, with that in mind, go back to your object. The West side of your object is completely black, meaning that it doesn't fit with the illumination at that place. There should be well-lit "sides" on the West side of your "hole", and they are not present.

Second, this is just a piece of imagery that is very dirty. In a short span of 15 minutes or so, I found well over 3 dozen examples of dirt, dust, lint, and fuzz in the general area of your object (see .kmz below). None of them quite so large, but several fairly large pieces, large enough to see various features.

As I said in another place, I don't understand why the people who own, process, and distribute this data don't take better care of it, but they don't. You'd think something as important as photoimagery of the surface of the Moon (they sent a satellite all the way there to take the pictures) would be preserved in as nearly pristine a condition as possible, but it is not. Perhaps the originals are, but what we see is depressingly poorly kept. They're just plain dirty in many places.

That's my take on it, anonymous. You've found a giant piece of dust, that's all. Again, welcome to Google Moon (and Google Sky, Google Earth, etc.)!

Keep looking, and have fun!