Skiing this weekend I experienced some spotty coverage in Colorado at a few ski resorts. On a positive note, I skied Keystone Mountain and had perfect cell phone coverage throughout the mountain even on North Peak and the Outback. The next day I went to Vail and experienced virtually no cell service throughout the mountain. I was even amazed I even had zero reception for about 5 miles going over Vail pass on I70 a Federal highway. I would estimate 15,000 people are skiing on a daily basis in Vail. Is this a safety hazard not providing cell coverage throughout the mountain? I think so. Happy skiing.