Here the spirits are said to hold mighty revel and celebrate fantasias to the sound of sweet music. Bear left at the fork into the wadi for about 400 metres to Site 8. Dykes are the stripes of volcanic rock intrusions which sometimes stretch for kilometers and can be many metres in width. Dykes are usually a darker red or grey colour than the surrounding rock and are more permeable to water than the harder granite. Underground springs are more likely tapped here than anywhere else.
Plants grow more easily along dykes and animals congregate to feed and take shelter here.
The fenced plots of land on the left are being used to study the effects of sheep and goats grazing on the vegetation. Compare the vegetation inside the exclosure plots to the surrounding vegetation outside. The Jebeliya Bedouin are pastoral nomads and have a long history of grazing sheep and goats but grazing pressure has increased in the last fifty years with a rise in the local population. Today the Bedouin population is over 3000 and pressure on the land has increased with plants being eaten before they can set seed. The Bedouin solution to this problem is the traditional practice of helf a restriction on grazing in a given area, for a certain time, to allow for the regeneration of plants.