Black Triangular Craft moving north to south at time of lunar eclipse. Well camoflaged, it appeared as if a piece of the sky had moved.At approx 10.50pm while observing the Lunar Eclipse, I spotted something in the sky below the level of the moon and a few degrees to the north. The object at first looked as if a section of the sky had peeled away from the background, and moved from north to south almost like a chesspiece on a board. I immediately shouted out to my companions and said " look! what the hell is that?" What I saw was a 'triangular (equilateral) shaped black object moving rapidly from north to south. One of the points of the triangle being the leading edge. The two outside edges (behind the leading point) had several dim lights down the two sides. These lights were a little ways in from the edge. The object moved in a straight line (without deviation) and without sound. It was visible for only a few seconds (four or five) and then we lost it in the glare of the lights from the hotel.. One of my friends missed it all together as he was looking in the direction of Orion trying to see shooting stars, but my other friend and myself observed it. Without prompting, I asked him to describe to me what he had just seen. He describe it 'exactly' the way I had seen it. We were located just south of Puntarenas Costa Rica. Date Jan 20/2000, Time 10.50pm local time. We did not talk about it much while we were on holiday, as it took a few days to sink in, but had a serious discussion when we got back. The other day at work I asked him to draw the object in question and I would do the same. The drawings were identical. I cannot explain what we saw that night, it was most unusual to say the least. I asked one of the local guys at the hotel in Costa Rica (Caribbean Village Fiesta Hotel) to check the local papers and the internet. He did not find anything. At the time of the sighting the weather was clear and visibility was good. My friends and I were on a pier, away from the lights of the hotel, so we had a pretty good view of the night sky. We observed the craft by looking east over the beach. It was only after the craft had move towards the south, that the lights of the hotel came into play.