This is an image of flowing lava.
Click on image for full size
Lava can move in two ways, wide flat lava flows, or through channels which squeeze the lava into a small area. The fastest lava flows move at about 6 mi/hr, an easy jog, but they average between 2/3 and 1/3 mi/hr.
Lava in channels can move very quickly. It can typically move up to 23 mi/hr (a sprinter's top speed), but have moved at up to 35mi/hr, faster than any person can run!
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