Height 611 Ufo Incident

Height 611 UFO incident refers to a UFO crash claimed to happen in Dalnegorsk, Primorsky Krai, USSR, on January 29, 1986. Height 611 (also known as Mount Izvestkovaya) is a hill located on the territory of the town.

Incident description

A reddish ball was noticed by the inhabitants of the town at around 8 PM on that date. Eye-witnesses say that the ball was about the size of a half of the moon disc. The ball was flying parallel to the ground; there were no sounds accompanying the flight.[1] It was later determined that the speed of the flying ball was approximately 15 m/s, and that it was hovering about 700-800 meters above the ground. When the ball reached Height 611, it started to decline and then fell down onto the hill. All but one witnesses say there was no sound when the ball reached the ground.

The process of the fall was described differently by eye-witnesses. Some said the ball fell down with a flash and was not visible after that, others claimed the ball was hovering above the hill giving some light of various intensity as it was going up and down. The light given by the ball was described by some as a forest fire which lasted for approximately one hour.

Three days after the incident, a group of ufologists lead by Valery Dvuzhilny climbed the hill. They discovered a landing ground 2x2 m in size (other sources indicate the size of the landing ground was 3x3 m). The ground looked like it was affected by very high temperatures. The rocks on the landing ground were covered with a black film, and remains of a burnt tree were found within the landing ground. The remains were not typical for a forest fire.[citation needed] Some of the rocks had drops of silvery metal, which was later determined to be lead. The type of lead found on Height 611 was different from the lead found in local lead deposits. Also, black glass-like drops and mesh particles were found on the site. In all, approximately 70 g of lead, 5 g of mesh particles, and 40 g of black drops. The radiation level on the landing ground was normal. The group took pictures of the site using two different cameras; however, the film later developed as blank.


A chemical analysis of the drops showed they were mostly composed of lead, silicon, and iron. Some of the drops contained significant amounts of zinc, bismuth, and rare earth elements. An analysis of the soil, rocks, and burnt wood taken from the landing ground was also performed. It was noted that the chemical composition was similar to the composition of similar samples taken from the site of Tunguska event.

The mesh particles were also analyzed. The material of which the particles are composed does not dissolve in potent acids and organic solvents even when exposed to high temperatures for prolonged periods of time. It was discovered that one of the mesh particles was composed of scandium, gold, lanthanum, sodium, and samarium. A different analysis of another mesh particle showed gold, silver, and nickel. After that particle was heated in vacuum, the analysis no longer showed these elements; however, molybdenum and rhenium were detected.

The quantity of gold detected in one of the mesh particles translates to 1,100 g per one metric ton of ore. Normally, gold deposits start getting developed when the quantity reaches 4 per one metric ton. There are no gold mines in Dalnegorsk as none of the ores contain this amount of gold.

Further incidents

Similar flying balls were detected over the territory of Dalnegorsky, Kavalerovsky District, Olginsky, and Terneysky District of Primorsky Krai in November of 1987. One of the balls was noticed above the Height 611 illuminating the ground on the peak of the hill. The descriptions of these balls given by witnesses match the descriptions of the UFO that crashed on Height 611 in 1986.

A claim of UFO landing on Height 611 was also made in 1989.

TV program on incident

The Dalnegorsk incident was covered by the Sightings television program on April 3, 1995. Director Tod Mesirow visited the site, spoke to witnesses, and also to some of the scientists involved in analyzing debris. According to Mesirow, "Russian analysis of metal fragments recovered from the crash site say the metal is not manmade manufacture, but is from somewhere else."

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