At the junction of Yanyuan County, Sichuan Province and Ninglang County, Yunnan Province in China, there is Lugu Lake, the third largest deep-water lake in China. It has an average water depth of 40 meters and a maximum depth of 70 meters. Here, a highly publicized UFO sighting incident once occurred.
At around 5 p.m. on February 18, 2001, Bo Zhiwei, the general manager of Mosuo Resort in Lugu Lake, noticed something was wrong. His mobile phone signal suddenly cut off, and all the fixed - line telephones in the office emitted harsh noises. Out of professional habit, he walked out of the office and went to the lakeside to check the lines. When he looked up at the lakeside, a startling scene came into view: a plate - sized luminous object was hovering at a low altitude. This luminous object emitted a strong white light all over, with a bright edge and a sunken center. Its shape was like a cut - off sphere, presenting a spherical cap - like shape.
Bo Zhiwei quickly returned to his residence and fetched a Sony home video camera and a pair of 10 - power binoculars. With the help of the binoculars, he further observed that the surface of the object had a faint net - like structure, and something seemed to be ejected from its bottom. For the next five consecutive days, this mysterious object was very "punctual". It appeared at around 6 p.m. every day and did not disappear until midnight. The longest stay lasted for more than two hours. During this period, Bo Zhiwei filmed a total of 45 minutes of footage, which became the world's longest continuous record of the same UFO phenomenon.
It is understood that hundreds of local people witnessed this phenomenon, and every time the object appeared, the surrounding electronic devices were interfered with. On February 23, the mysterious sphere underwent even more strange changes before disappearing. It gradually split from a complete spherical cap - like shape into two irregular luminous objects, accompanied by a faint green light. Witnesses said that its moving speed far exceeded that of human - made aircraft, and it finally disappeared into the sky in a way similar to teleportation.
Bo Zhiwei sent the filmed video tape to the Yunnan Observatory. Researcher Bao Mengxian initially identified the object as an unidentified flying object. UFO researcher Duan Lixin further analyzed that by observing the net - like texture of the ejecta at the bottom of the UFO in the video and comparing it with the reference objects, he estimated that its diameter was about 4 meters and its hovering height was less than 1,000 meters. He also ruled out the possibilities of common objects such as airplanes and searchlights.
However, this incident became even more mysterious. Although there was no official statement, there were rumors that unknown people had taken away the original video tape and restricted people from discussing this matter. This behavior instead made the mystery of the incident even thicker.
Regarding this incident, there are also some different explanations. Some people believe that the resolution of the camera equipment in 2001 was relatively low, and light sources were prone to distortion during night - time shooting. For example, the halo of an electric light, when blocked, might simulate a spherical cap - like outline, and the electronic interference might just be a regional electromagnetic anomaly. But witnesses emphasized that during multiple shootings, the position relationship between the UFO and reference objects such as electric wires and rooftops remained stable, and the electronic interference only occurred when the UFO appeared. It was difficult to explain it simply by technical defects.
The mysterious phenomena in Lugu Lake are not limited to this. As early as before 2001, tourists had reported that regular light spots with a diameter of two meters had appeared on the lake surface, accompanied by sudden rises and falls of wind and waves. What's even more strange is that observers on the shore had seen nine lights in the lake arranged in a triangular shape, but cameras could not record them, which seems to imply that these lights had non - visible spectral characteristics. In 2007, a tourist encountered what seemed like a broken road while driving at night. An abyss - like void appeared in front of him, and all the equipment in the car malfunctioned. However, a few minutes later, all these strange phenomena disappeared. Similar rumors of time - space distortion are often associated with UFO activities by the public. Although there is no scientific evidence to confirm them, they have cast a supernatural and mysterious veil over this area.
To this day, the Lugu Lake UFO incident remains an unsolved mystery.