"you see some pale bulbous eyes staring at you." Then, unless the player is where FOREST_ENTRY says or at the other of the forest road and the forest (locations 2 and 3), something drops and stings, fatally, as in EYES_STING. FOREST_ENTRY is the forest location IN_THE_FOREST noted on arrival, so the player is safe only while still in the forest: stepping out of it during the warning turns is death, and so is staying until the timer runs out. Tried in the simulator: from the other forest road (46), east and straight back west was fatal on arriving; east, east, east to the waterfall was fatal at the waterfall; walking back and forth between 2 and 3 kept the player alive, and waiting there killed on the third WAIT.