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Flat land with stream
The tiny stream flowed through flat land weathering and eroding a little peace at a time -
Gorge by flat land
The tiny stream is now a river and has weatherd and eroded away the flat land making it longer deeeper and wider -
Canyon with river
The gorge is now a canyon 3 miles deep and 200 miles long and 4 miles wide -
Large Canyon with large river
The canyon is now 2000 miles long 200 miles deep and 60 miles wide all beacause of erosion and weathering
