Clearing of rock and sand overburden began in L1 in preparation for two trenches: one at the junction of L1 and the seawall (an extension of Trench 1 from 2012), the other located slightly farther along the seawall in the direction of L4 (Trench 3). A third trench (Trench 4) has been opened along the interior of the western mole of L2, east of the tower.
