February 17, 2017 - New drone images from the summit of Cerro Pachón show the rapid progress of LSST construction. You can see the circular lower enclosure with the telescope pier inside, the elevator shaft, and the (long rectangular) service building. The third image shows white siding going up on the lower enclosure and progress on the foundation for the Auxiliary Telescope. Inside the facilities building windows are appearing, drywall is going up and cable trays are being installed. The summit team has one month to get ready for the start of Dome installation.