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.
The facet joints are located on the spineâs posterior column, or the rear of our backs. Facet arthrosis is a degenerative spinal condition like arthritis in which bony enlargements, called osteophytes or bone spurs, grow and enlarge the facet joints. It occurs most commonly in the lumbar spine, or lower back region.