This incredible glistening fortress was built by a colony of bees as an elaborate entrance to protect their nest. The family of meliponini stingless bees made the stunning gold tunnel after setting up home in Pai, northern Thailand. Footage shows several insects diligently working on the trumpet-shaped entrance which is designed to protect against intruders. The fragile resin structure conceals the queen bee and the prized honey which is hidden deep inside the hive.