The first Cave Urban research folio 'Bamboo and Lightweight Structures' was compiled in order to share information on bamboo as a resource and design material. The folio is an exploration of projects by architects, designers and communities across the world, focusing on historical and modern vernacular building techniques using a variety of materials. It is the first of three folios and includes our own research into bamboo and lightweight structures with the resulting prototypes, mentors, concepts and field trips.