@Razmysl,
												To walk across something,   anything, can be done without making a straight line.   It can be done in a zigzag manner, moving left to right, left to right or at one angle all the way.   Quite simply,  whatever means (way) a person chooses to go across a road,  body of water, field, mountain,  room,  etc.  If a person chooses to move across something in ever growing circular movements, they will eventually be able to get across,