The Park Service opened Square Tower on 1 September 2011 to limited visits of 10 people a day, three days a week, for six weeks, after being closed to the public for 75 years. We were in the first group to visit the site. After this limited opportunity, it will once again be closed to the public. It was an exceptional opportunity, and a trip we'll remember forever... Looking west from the tower base toward the rest of the ruins, including another kiva and other rooms. I found a small pottery shard on the ground near the kiva wall - and yes, I replaced it where I found it. It had smooth interior and exterior surfaces, with a darker grey material sandwiched in the middle. You could see a small decorative design on the outside that had been "painted". This illustrates the partially-roofed kiva's ceiling design and construction. Note the stone pillars that hold up the interlaced logs, above which are the main ceiling logs, covered with dirt to provide insulation. People entered the kiva from the top of the roof, where a hole provided access down a ladder, as well as allowed smoke from the fire to escape. A view through a "window" looking west from the tower base. Another kiva is located in the western part of the ruins. Notice the very thick walls - it appears to be about 5 courses of rocks - and note that this kiva, atypically, has a notched wall, rather than being completely round. You can see the air intake hole atop the left part of the wall that allows fresh air into the kiva. Click here for more photos of the site.