Khufu's cartouche name is also inscribed on some of the heavy limestone blocks at the site. The harbor was of strategic and economic importance to Khufu because ships brought precious materials, such as turquoise, copper and ore from the southern tip of the Sinai peninsula. The papyri fragments show several storage lists naming the delivered goods. The papyri also mention a certain harbour at the opposite coast of Wadi al-Jarf, on the western shore of the Sinai Peninsula, where the ancient fortress Tell Ras Budran was excavated in 1960 by Gregory Mumford. The papyri and the fortress together reveal an explicit sailing route across the Red Sea for the very first time in history. It is the oldest archaeologically detected sailing route of Ancient Egypt. According to Tallet, the harbor could also have been one of the legendary high sea harbours of Ancient Egypt, from where expeditions to the infamous gold land Punt had started.