An arching fountain of p?hoehoe lava, approximately 10 m (33 ft) high, issuing from a spatter cone of Pu‘u Kahaualea, Hawaii. P?hoehoe is basaltic lava that has a smooth, billowy, undulating, or ropy surface. These surface features are due to the movement of very fluid lava under a congealing surface crust. P?hoehoe lavas typically have a temperature of 1100°C–1200°C.
None of that boring Vesuvius dust!
