From Around the Web: 20 Awesome Photos of high jump track
https://wiki-neon.win/index.php?title=The_No._1_Question_Everyone_Working_in_high_jump_surfaces_Should_Know_How_to_Answer
As with most track events, jumpers have three attempts at each height. Heights are raised 2 cm after each round, and just those who clear the bar move on to the next round. The winner is he or she who clears the