@DR OSMAN
A guy told me that the ancient people of Punt built their houses and structure using trees and other natural resources, that's why we can't find anything substantial about the ancient Puntites in Somalia. I believe the heart of Punt was in Eritrea and was more aconomically active there. Only the northern tip of Somalia/SL & Puntland.
The city of Adulis used to be called Zula/Zela, maybe when the Puntites went further south they named our coastal city 'Zeila'. Maybe that's where the name comes from?