CABO ROJO

Opening

South-west Puerto Rico, around Cabo Rojo, Lajas, and the Sierra Bermeja hills, has long been a centre for UFO reports. Fishermen and residents describe lights over the sea and over Laguna Cartagena. The best-known story is from the evening of 28 December 1988, when witnesses said two military jets chased a huge triangular object that then took the jets into itself and vanished.

Nearly everything known about that night comes from one researcher, Jorge Martín, editor of the Puerto Rican magazine Evidencia OVNI, who interviewed the witnesses and published their accounts and sketches. No military, aviation, or radar record of the event has been made public, and I couldn't trace any official statement about it.

Timeline

1970s and 1980sReports build up of lights and objects around Cabo Rojo, Lajas, and the offshore waters, many from fishermen.

July 1988A Cabo Rojo man, Carlos Manuel Mercado, later tells Martín he was abducted and taken into a base beneath El Cayúl, a peak in the Sierra Bermeja.

28 December 1988, about 7:45 p.mBy Martín's account, witnesses in Lajas and Cabo Rojo see a large, glowing triangular object low over the Sierra Bermeja and Laguna Cartagena, followed by two jets that some took to be F-14 Tomcats. The jets are said to close in on the object and disappear into it, after which the object leaves.

1989Martín publishes the witness accounts in Evidencia OVNI. The same year, construction begins on a US Air Force tethered-balloon radar site at Lajas, and Laguna Cartagena becomes a national wildlife refuge.

1995The chupacabras scare starts elsewhere on the island, with animal deaths reported at Orocovis in March and a widely publicised sighting at Canóvanas in August. Martín and others later tie the south-west sightings to it.

January 1999British researchers Timothy Good and Graham Sheppard visit the Lajas radar site, following rumours of an underground base, and report finding nothing to support them.

Key figures

Jorge Martín, a Puerto Rican journalist and UFO researcher, collected and published most of the accounts and promoted the idea of a hidden base in the Sierra Bermeja.

The witnesses were residents of Lajas, Cabo Rojo, and nearby towns. Martín named some of them; their statements are known only through his publications.

Carlos Manuel Mercado is one of the named witnesses, and his separate abduction claim shaped how the 1988 sighting was interpreted.

Physical and documentary trail

The record holds witness interviews and sketches published by Martín, later retellings in books including Timothy Good's, and press reports. No photographs, radar data, air traffic records, or military documents about 28 December 1988 have been published.

The original report on this case said the US Navy denied losing any aircraft. I couldn't find that statement in any primary or contemporary source, so it is not repeated here as fact. Martín's own publications are the starting point for anyone who wants to look for it.

Things you might not know

• A radar balloon came after the sighting. The tethered-aerostat radar site at Lajas, built from 1989 to watch for drug-smuggling flights, became the focus of rumours of an underground base.
• The lagoon became a refuge the same year. Laguna Cartagena National Wildlife Refuge was set up by the US Fish and Wildlife Service in 1989.
• One witness also told an abduction story. Carlos Manuel Mercado said he had been taken inside the hills months before the jet sighting.
• The chupacabras started elsewhere. The first well-known reports came from Orocovis and Canóvanas in 1995, not from the south-west.
• The Aguadilla video is a different case. The 2013 thermal video of an object over Aguadilla was filmed on the island's north-west coast.

Competing explanations

Unknown craft and a hidden base. Martín's reading. It rests entirely on witness testimony collected by one investigator, with no independent physical or documentary support.

Military aircraft and exercises. Puerto Rico had major US military activity in the 1980s, including naval air operations. Low jets with lights, flares, or refuelling at night can look dramatic from the ground, and aircraft "disappearing" may simply have flown out of sight or turned off their lights. No exercise record for that night has been published either.

Later life of the case

The Sierra Bermeja and Laguna Cartagena remain a stop on UFO tourism routes, and the 1988 story is retold in Spanish- and English-language UFO books and programmes, nearly always going back to Martín.

Finding

Settled: residents of south-west Puerto Rico reported a large lit object and military jets over the Sierra Bermeja on the evening of 28 December 1988, as collected and published by Jorge Martín. There is no physical or official evidence, and the reported Navy denial couldn't be traced. Unexplained on testimony alone. This report is short because the record is.

What still will not resolve: what was flying over the Sierra Bermeja that night. A military flight log or FAA record for 28 December 1988 would decide it.