The initial materials utilised were Wooden and terracotta, but architects gradually moved on to brick and stone, Specifically sandstone, granite, schist, and marble. No mortar was Employed in the more mature temples and so precise slicing of dressed stones was expected. Check out the Gaushala Seva initiative within the Hanuman https://livetodaysbuzz.blogspot.com/2024/04/unveiling-majesty-of-hindu-temple-in.html