The entrance to Kenya in the immediate vicinity of Somalia (and Ras Kamboni) is marked by two tombs with high pillars whose existence may have once been a pre-Islamic market, possibly one of the emporia mentioned in the great Periplus of the Erythraean Sea. The site is also thought to be the mysterious Shvpigwaya of African tradition, claimed by Kitab-ul-Zunuj to have been the dispersal point for a large number of African tribes during the 12th or 13th Centuries. 10 km to the south of Ras Kamboni are the ruins of the walled town of Ishakani, with a similar tomb. South of Ishakani is a large rectangular panelled tomb over 1.2 ms high covering an area of about 80 m2. Three of its walls are decorated with asymmetrical, of abstract motifs in low relief; that do not appear to be Islamic. 16 km further south are the ruin of a mosque thought to belong to the site of a settlement on Kiunga Island, opposite where there is an old tomb with a pillar in a bad state of repair.