All of Malta’s temples are constructed with types of limestones that naturally fracture into blocks, so the builders didn’t have to do a lot of sawing with their simple stone tools. Ħaġar Qim is built of Globigerina limestone carried from nearby. This kind of limestone is softer, which means it’s more susceptible to weathering. That’s why the temple now sports a protective tent over it. Look closely at the bottom of the rock and you’ll see clues as to how the builders moved the stones and then pinned them into place.