National Geographic - Seconds from Disaster

• Release info:
  SFD.Low.Quality.With.Chinese.Subtitle.S02E04.Mount.St.Helens.Eruption
• A commentary by
  chochancuuDuc
• Download low-quality version here: http://www.fshare.vn/file/DWRHV4K50P/ There are three parts.
• Download Vietnamese Subtitle