The Selai entrance is named after the main river that flows through this park of the park. A local Orang Asli legend has it that long ago a celestial princess who possessed great body heat descended upon the earth. The scorching heat that emanated from her body caused the great river that flowed down from the mountains of Gunung Besar to be reduced to a mere trickle the size of a strip of rattan or in the local language, sehelai rotan (or “Selai” for short).