Aviation safety experts examining the Jeju Air plane crash in South Korea were questioning whether a concrete and soil embankment at Muan International Airport exacerbated the disaster, the Korea Times has said.Video from Seok Junhyoung shows the scene of the crash on December 29. Both the wreck of the plane and the structure can clearly be seen in the footage.The earth and concrete embankment supported a type of navigation equipment the Korea Times referred to as a “localizer”. Such equipment helps guide aircraft along the runway.Kwon Bo-heon, a professor of aviation safety management at Far East University, told the Korea Times, “The rigid construction of the localizer likely worsened the accident’s severity. Video footage shows the aircraft sliding smoothly along the runway before colliding with the mound and erupting into flames.”Another aviation expert, David Learmount, told Sky News the plane’s collision with the embankment was the “defining moment” of the crash, in which 179 people were killed. Credit: Seok Junhyoung via Storyful