mystic river quest witcher 2 walkthrough where is shipwreck and dropbox

Question

need help on the quest mystic river on Witcher 2. cant find ship wreck or drop box

Answer 1

Drop box is in town, in the building behind the two merchants stalls. Where you turn in the Nekkar and Endraga quests. Look for the potion merchants and the green tent merchant you cant buy from. Directly behind their stalls in the building with the post box