Some of the rough at Royal Liverpool is so high that you can literally hide in it
HOYLAKE, England -- U.S. Open rough may be heavy, but it's got nothing on the British Open in length.
The rough just off the fairway at Royal Liverpool is generally about a foot high, but there are spots around the course that are much higher. You have to miss it pretty big to find the really long stuff, but the rough about 25 yards left off the tee on the third (which comes into play because of the tight out-of-bounds on the right), 14th, 16th and 17th holes gets about five feet high.
Don't take my word it, here's the proof. To put things in perspective, I'm 6' 2":