Gruta do Natal (Christmas Cave)
The Christmas Cave is located in the middle of Terceira Island: it belongs to the Protected Area of Santa Barbara/Mistérios Negros. It’s one of three touristic caves of Terceira Island. Inside you may see many geological structures such as: different types of lava flows, stalifites and small lateral “counters”. It’s like a didactic space, where more and more people visit to understand better the volcanic activity responsible for the genesis of these islands. The cave was probably formed by lavas of a nearby fissural eruption but there isn’t much data about the year of the eruption. This lava tube has 697m of extension and it’s easy to walk inside.