Original sentence: Efforts during the 1960s and 1970s explored the other faces of El Capitan, and many of the early routes are still popular today.For climbers, the challenge is to climb up the sheer granite face; there are many named climbing routes, all of them arduous.Nonetheless, as with most of the rock forming Yosemite's features, El Capitan's granite is under enormous internal tension brought on by the compression experienced prior to the erosion which brought it to the surface.These ascents were long 7-14 day ordeals that required the solo climber lead each pitch, and then rappel, clean the climbing gear, reascend the lead rope, and haul equipment, food, and water using a second haul rope
Edited sentence: Efforts during the 1960s and 1970s explored the other faces of "El Cap", and many of the early routes are still popular today.For climbers, the challenge is to climb up the sheer granite face; there are dozens of named climbing routes, all of them long and difficult.That said, as with most of the rock forming Yosemite's features, El Capitan's granite is under enormous internal tension brought on by the compression it experienced prior to the erosion which brought it to the surface.These ascents were long 7-14 day ordeals that required the solo climber lead each pitch, and then rappel, clean the climbing gear, reascend the lead rope, and haul equipment, food and water using a second haul rope