Perth Canyon is a significant underwater canyon located off the southwestern coast of Australia, near the city of Perth in Western Australia. The canyon stretches approximately 120 kilometers (about 75 miles) along the ocean floor and is one of the largest underwater canyons in the world. The canyon features steep-sided walls and a complex structure that includes a variety of geological formations. It is believed to have formed through the processes of erosion and sedimentation over millions of years.
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