KATHMANDU, Oct 2: Following the end of the rainy season, the construction work on the eagerly anticipated Butwal-Palpa tunnel is slated to begin. This tunnel, spanning 1.126 kilometers, is a response to frequent landslides in the area, and it will connect the Chidiya Khola to the confluence on the north side of Siddhababa temple within the Butwal-Tansen section.