September 4, 1971
Location: Lago de Cote, Costa Rica
was taken by a Costa Rican government mapping plane during
an aerial mapping mission. No member of the crew stated
that they saw anything unusual during the routine flight.
Much analysis has been undertaken using the original negative.
photo above (cropped and enlarged) was taken by a Costa
Rican government mapping plane during an aerial mapping
mission. This UFO photograph is unique for several reasons.
1) The photograph was taken by a high-quality, professional
camera. 2) The unidentified object is plainly visible
against the uniformly dark background of the lake and
appears in sharp focus. 3) The camera was aimed downward
and the plane was flying at a known, fixed altitude (10,000
feet), which makes it easy to calculate a maximum size
for the object (683 feet).
plane carried a crew of four; a specialist in aerial photography,
a geographer, a topographer, and the pilot. No member
of the crew stated that they saw anything unusual during
the routine flight.
analysis has been undertaken using the original negative,
most notably by Dr. Richard F. Haines and Dr. Jacques
F. Vallee. It seems safe to assume that it is not a double-exposure
or the result of manipulation of the negative. All indications
are that this is a photo of a large three-dimensional
disk, or shallow cone, [hovering?] above, and possibly
partially submerged in Lago de Cote.
were apparently no witnesses to the disk's presence at
the time of the photograph, but other incidents at that
location had been reported by local farmers, involving
strange, artificial objects moving around the surface
or just below the surface of the lake. (NURMUFO)
an in-depth, scientific analysis of this photograph, see
Analyses of an Aerial Disc Over Costa Rica",
by Richard Haines and Jacques Vallee.