Pahoehoe. Pronounced /pəˈhoʊ.iːˈhoʊ.iː/, this word comes from the Hawaiian [paːˈhoweˈhowe], meaning “smooth, unbroken lava”. It basaltic and has a smooth, billowy, undulating, or ropy surface. It’s everyone’s favourite type of lava, right? Some photos, elegantly placed in a slideshow, from the southern flank of Kilauea, Hawaii (a.k.a, Big Island), US.