Researchers attribute the tracks to the Paranthropus boisei species based on foot shape and gait, and say they were probably left by adult males.

A set of footprints that date back more than 1.4 million years reveals our ancient relatives may have travelled in all-male gangs.

Mysterious Human Relative Was Bigger Than Previously Thought: Paranthropus boisei footprints offer clues to their size and social dynamics