June 2021 Issue [Annotation] Measureless to Man Download PDF Adjust Share The art of mapping the underground by Matthew Sherrill, View Fullscreen From the Archive Timeless stories from our 174-year archive handpicked to speak to the news of the day. Email address Sign Up Got it! Thanks for signing up! Matthew Sherrill is a senior editor at Harper’s Magazine. Tags Cartography Cave mapping Caves David Mayor National Speleological Society Taj Mahal cave system (Mexico) More from Matthew Sherrill Forbidding Planet George R. Stewart’s novels of natural disaster Weekly Review Paul Ryan fails to repeal the Affordable Care Act, Donald Trump goes golfing for the thirteenth time as president of the United States, and rivers in India and New Zealand are granted full human rights Weekly Review The White House puts Iran "on notice," Trump threatens to send U.S. troops into Mexico, and Punxsutawney Phil predicts six more weeks of winter Adjust Share