Ollo

Ollo is associated with the Oldoy River, a northern tributary of the upper Amur. Rising on the southern slopes of the Chernyshev Range, it flows through wooded country before its valley widens into channels, lakes and shoals. The name is derived from an Evenki word associated with fish, a reminder of the river's place in the life of the forest peoples. Its waters eventually join the Amur, which continues east through the mountains toward the sea.