"I regard Ambergris Caye as the long, narrow barrier island synonymous with the Great Blue Hole — a 406-foot-deep, 1,000-foot-wide marine sinkhole that looks like an enormous blue circle visible from space — and readers note it’s a must-see diving destination (scientists even warn it won’t be around forever); it’s also a WBA Hall of Fame honoree." - Nili Blanck Nili Blanck Nili Blanck is a writer based in Mexico City covering culture and social justice. She has a J.D. degree from the University of Michigan Law School. Travel + Leisure Editorial Guidelines