To make a river stone mat first you have to gather or purchase river stones. After that take a plastic mat and arrange all the stones on it. Then stick all the stones one by one to the plastic mat by using silicone sealer. Let the sealer dry completely.
Here's another inspiring earthbag construction for fans of natural homes out there! The Shantikuthi Earthbag Spiral House is called such because its walls were built in a spiral pattern. Its roof also has a spiral garden where visitors can harvest seeds