With a hellish red hue and huge plumes of smoke, a small rivulet in upper Assam has been on fire for the last two days after a crude oil pipeline in the area exploded. The small rivulet of the Burhi Dihing River in Dibrugarh district's Naharkatia town, over 400 km from Guwahati, erupted in flames on Saturday. Oil India authorities said that the leakage took place because of a "rare instrumentation error" in the central tank pump where the crude oil from all Oil India fields in upper Assam region is collected.