Is A Small Indent In The Scrotum Between The Testicles Normal?

Hi , I have a small indent in my scrotum about 2/3 of the way down from base of shaft it is right between both testicles. I am in my 50’s and never noticed it until after my wife shaved the area. Is this normal or something I should be concerned about? There is no pain or sensitivity or swelling or discoloration.