the sun - Sun path at poles

At places other than the poles, the sun is seen to "rise" on the Eastern horizon and to "set" on the Western horizon. After a period of night, the sun "reappears" on the Eastern horizon.

At the poles, during the short periods of 24-hour daylight, what does the sun path look like? Where does the sun move after it has reached its Western most position? Back Eastwards along the same path in reverse?