Tarxien Central has six apses rather than four or five. After you pass the first two, you must step up and over the spiral stone seen above to get to the other four apses. The spiral here is a reproduction; the original is at the National Museum of Archaeology. Also notice the white base of the megalith on the right. When conservation was done back in the 1950s, concrete was used to repair or replace stones that were crumbling or missing. In the foreground, you can just make out a hearth. With all the fires being lit in this area, archaeologists think that this apse wasn’t roofed over so that the smoke to escape.