When the Chashmonaim recaptured the Temple many years ago, they were horrified to discover that the Altar had been used for pagan worship. As a result, they disassembled the entire Altar and ramp and built them anew. Through a similar siyata dishmaya (although on a smaller scale - literally and figuratively) I was able to refurbish and add to my LEGO® model of the Altar just in time for Chanukah.