A strange event occurred as we stayed at a campsite on the Indian Ocean the night before we headed to Zanzibar. The campsite was on the grounds of a hotel and there was some sort of religious convention going on at the hotel. All day we could hear people singing hymns and as we went to bed, some sort of ceremony started. At about 10:30 pm, the preacher and the congregation began to scream loudly (into a microphone) in a very bizarre way. Heather thought it sounded like someone was giving birth. Others in our group thought it was an exorcism. We couldn't understand anything they said except for the occasional "Hallelujah" or "Amen." They continued with this for a solid 20 or 30 minutes. We weren't sure how they were able to do this without losing their voices. Luckily they stopped when they did--otherwise they might have had a confrontation with 10 angry campers!