Alien Technology, information on ufo technology

This is a picture I took in the Cairo Museum in Egypt. This is a very big stone apparatus. Notice the very symetrical and well made cups somehow made into the giant stone square. Many people who are into alien technology think that this stone block was used for creating electricity. Why would someone go to all the trouble of creating this atleast 5 ton stone block, and then making these cups. Some people think a stone sphere was placed in the cups and then somehow they used this device to a practical end. The hieroglyphics on the stone block might give us clues to it's purpose, however no one can acurately read them. To go to all the trouble to build this, I can only imagine that it had an important purpose.