In the centre of a pumice-covered plateau from loon to 2000 ft. In 1886 there was a serious volcanic eruption in the outlying island of Nivafoou, and at the same time Falcon Reef, normally awash at high water, discharged sufficient scoriae and pumice to form a new island 50 ft.
The superior facet, also called the superior articular process, is a pair of facet joints between pairs of vertebrae. A facet joint is what holds two vertebrae together and each vertebra contains two pairs, an upper-facing superior facet pair and a lower-facing inferior facet pair.
Each vertebra has a facet on each side of the vertebral body which articulates with the head of a rib. There is also a facet on each of the transverse processes which articulates with the tubercle of a rib.The number of thoracic vertebrae varies considerably across the species.ach vertebra has a facet on each side of the vertebral body which articulates with the head of a rib. There is also a facet on each of the transverse processes which articulates with the tubercle of a rib.