Just as Alice, when she walked through the looking glass, found herself in a new and whimsical world, so we, when we crossed over the Pa Chu, found ourselves as though caught up on some magic time machine fitted fantastically with a reverse…

— EARL OF RONALDSHAY, BRITISH GOVERNOR OF BENGAL, 1921, ON CROSSING THE RIVER (PA CHU) THAT LED HIM INTO BHUTAN