PHYSICAL BARRIERS

Steep Terrain: EW1, EW3, EW4, EW5, EW6, EW7

Ground Elevation along EW1 (Savannakhet-Danang)

Ground Elevation along EW4 (Ban Lao-Vinh)

･　New bridge across Mekong River: EW1 (Mukdahan-Savannakhet) ; EW4(Nakhon Phanom-Thakhek)

･　Flood phone area: EW8 (Rach Gia-My Tho)

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