WATCH: Check out the ridiculously deep rough at this week's US Open
Being a Major championship, the US Open is expected to be one of the toughest tests of a player's abilities, and it's not hard to see why.
With tight fairways, hard and fast greens that generally feature treacherous pin positions, and punishing bunkers dotted around the course, US Open courses are deliberately set up to be as tough as they can be.
In the past, most editions of the tournament have only had a small handful of players finishing under par, while Justin Rose won at Merion in 2013 with a score of +1.
This year's host venue, Shinnecock Hills in New York, has proven to be one of the toughest of them all, particularly after several changes to the course over the last few years.
And one of the key reasons is down to the thick rough that lines the fairways.
There's no room for error - while at your home course you can occasionally get away with an errant drive, anything that doesn't hit the short grass will leave you with an impossible shot at Shinnecock.
To demonstrate, check out this video from the European Tour, who show just what happens when your tee shot is wayward. Good luck to the ball-spotters finding these...
Belfast Telegraph Digital