Bouskoura forest.

This guide to Bouskoura forest outside Casablanca opens with a wall of green that turns out, up close, to be dying on its feet, a condition officials call severe dieback. It traces the forest back to its planting across some three thousand hectares to give a fast-growing industrial city shade, oxygen, and a buffer against dust, and follows the run of dry years that weakened the trees and opened them to insects and disease. You'll hear how foresters found the pines hit hardest while the eucalyptus fails only in patches, and what crews are doing about the worst of it right now. Look closely at the trunks along the path for the freshly cut stumps beside the trees still standing.