Definition of "Traverse" :

noun: travel across

noun: taking a zigzag path on skis

noun: a horizontal crosspiece across a window or separating a door from a window over it

noun: a horizontal beam that extends across something

verb: deny formally (an allegation of fact by the opposing party) in a legal suit

verb: travel across or pass over

verb: to cover or extend over an area or time period

"Rivers traverse the valley floor."