Our neighbors have finally started work this year and began with lot clearing and a cisterna, aljibe or water storage tank. Lots of talk about how to do it, plastic or a cement box, both building a protection wall for the plastic or just put it in the ground. He decided to to do both with a block wall around. Also discussed if it should have a cement floor because the block enclosure can collect water during the rainy season. He opted for a cement floor - we'll see
Protection wall for the plastic cisternaThe plastic cistern