In Year 8 of his reign, the Sea Peoples, including Peleset, Denyen, Shardana, Meshwesh of the sea, and Tjekker, invaded Egypt by land and sea. Ramesses III defeated them in two great land and sea battles. Although the Egyptians had a reputation as poor seamen, they fought tenaciously. Rameses lined the shores with ranks of archers who kept up a continuous volley of arrows into the enemy ships when they attempted to land on the banks of the Nile. Then, the Egyptian navy attacked using grappling hooks to haul in the enemy ships. In the brutal hand-to-hand fighting which ensued, the Sea People were utterly defeated. The Harris Papyrus states: Ramesses III incorporated the Sea Peoples as subject peoples and settled them in southern Canaan. Their presence in Canaan may have contributed to the formation of new states in this region such as Philistia after the collapse of the Egyptian Empire in Asia. Ramesses III was also compelled to fight invading Libyan tribesmen in two major campaigns in Egypt's Western Delta in his Year 5 and Year 11 respectively. The heavy cost of these battles slowly exhausted Egypt's treasury and contributed to the gradual decline of the Egyptian Empire in Asia. The severity of these difficulties is stressed by the fact that the first known labour strike in recorded history occurred during Year 29 of Ramesses III's reign, when the food rations for the favoured and elite royal tomb-builders and artisans in the village of "Set Maat her imenty Waset" (now known as Deir el-Medina), could not be provisioned. Something in the air (possibly the Hekla 3 eruption) prevented much sunlight from reaching the ground and also arrested global tree growth for almost two full decades until 1140 BC. The result in Egypt was a substantial increase in grain prices under the later reigns of Ramesses VI–VII, whereas the prices for fowl and slaves remained constant. Thus the cooldown affected Ramesses III's final years and impaired his ability to provide a constant supply of grain rations to the workmen of the Deir el-Medina community. These difficult realities are completely ignored in Ramesses' official monuments, many of which seek to emulate those of his famous predecessor, Ramesses II, and which present an image of continuity and stability. He built important additions to the temples at Luxor and Karnak, and his funerary temple and administrative complex at Medinet-Habu is amongst the largest and best-preserved in Egypt; however, the uncertainty of Ramesses' times is apparent from the massive fortifications which were built to enclose the latter.