Rammed earth is a sustainable building technique that uses natural materials, primarily soil, to create strong and durable walls. The process involves compacting layers of damp soil into forms, which can be made of wood or metal. This method not only provides excellent thermal mass but also reduces the need for energy-intensive materials like concrete. This ancient construction technique has been used for thousands of years in various cultures around the world. Today, architects and builders are rediscovering rammed earth for its eco-friendly properties and aesthetic appeal, making it a popular choice for modern sustainable architecture.