With the project presentations finished, today was a final vacation day before beginning the process of starting the journey back home. The group traveled an hour to Granada, where we boarded a boat on Lake Nicaragua for a trip to the Isletas, about 360 small islands formed before recorded history when the Mombacho volcano blew out one side and scattered much of the mountain onto the lake below. We had reserved the day with one of the islands that offers transportation, food, boating and swimming. It was a relaxing day with no work. Some of the guys discovered that ripe, soft mangoes were a lot of fun to throw back and forth while kayaking in the lake, and that led to a protracted naval battle that entertained many of the other students.