 During this period , the Mycenaean centers witnessed increased contacts with the outside world and especially with the Cyclades and the Minoan centers in the island of Crete . Mycenaean presence appears to be also depicted in a fresco at Akrotiri , on Thera island , which possibly displays many warriors in Boar 's tusk helmets , a feature typical of Mycenaean warfare . In the early 15th century , commerce intensified with Mycenaean pottery reaching the western coast of Asia Minor , including Miletus and Troy , Cyprus , Lebanon , Palestine and Egypt . 
