On Floreana Island, trek through the highlands and across the lowlands to Post Office Bay. This adventurous hike offers you a chance to observe the different ecosystems found on the island. The final part of the hike leads to Post Office Bay, which contains a rich human history. There you can find a barrel filled with postcards following in the tradition of the early whalers and buccaneers who visited the island. The tradition goes, if you see a letter addressed to someone who lives near you, you should take it and deliver it by hand.