Volcanoes are a bit like people in that they have a family tree. Take Rinjani on Lombok for example—it wasn’t always Rinjani. In 1257 thanks to one of the largest eruptions ever, Mount Samalas literally lost its head, leaving Rinjani as the peak. Within Rinjani’s caldera lies Segara Anak, a lake, it with a smouldering peak, Gunung Baru Jari, beside.
And…
