SCP-████

My own SCP. The SCP is now turned into Site-██ is what we know so far is an endless tower. As a test of last month, A class D. Also know as D-████ went up the tower. Stair after Stair. He is still up there but we will decide to conclude the test after a few months. Before we lost contact with D-████. He reported hearing noises from further up. But no matter how close you get the noise never gets any closer.