Rainbow curved and located high above the Sun (or Moon) with its convex side pointing downwards (creating the impression of an "upside down rainbow"); the circumhorizontal arc runs much closer to the horizon, is more straight and located at a significant distance below the Sun (or Moon). Both arcs have their red side pointing towards the sun and their violet part away from it, meaning the circumzenithal arc is red on the bottom, while the circumhorizontal arc is red on top. The circumhorizontal arc is sometimes referred to by the misnomer "fire rainbow". In order to view it, the Sun or
Desert rainbow-skink Desert rainbow-skink The desert rainbow-skink ("Carlia triacantha") is an Australian skink in the genus "Carlia", commonly known as four-fingered skinks, from the subfamily Lygosominae. It is native to desert woodland regions throughout most of the Northern Territory, the north of Western Australia, and the far north-west of South Australia. It was originally classified as "Leiolopisma triacantha", and is sometimes known as the three-spined rainbow-skink. The desert rainbow-skink is on average long, excluding the tail. It is characterised by three keels or spines on the dorsal scales. It is typically a mid-brown to grey-brown colour with less pigmentation on the ventral