(NECN/ABC) - A day trip to a tourist mecca has turned into a high-altitude adventure for some 2,000 visitors to Peru. They are stranded in the mountains after heavy rains and mudslides cut off their way down from Machu Picchu, the ancient Incan capital. Hundreds of Americans are among those stuck. The Peruvian government is hoping to have train service back by later today. The Peruvian military managed to airlift 20 sick and elderly tourists to safety but nearly 2,000 others remain trapped at Peru's famous Incan ruins. Days of heavy rain have battered the Peruvian city of Cuzco, the last stop on the way to Machu Picchu. Dozens of landslides and major flooding have killed an unknown number of people and forced hundreds to flee. From Cuzco, there is just one railway system that reaches the 7-thousand foot Incan city - Machu Picchu. It attracts up to 25-hundred tourists a day. This engineer said dozens of points along the railroad were damaged, walls have collapsed, and mudslides are blocking the route. That has left thousands of tourists stranded without access to supplies until train service resumes or a more comprehensive airlift effort gets underway. ABC's Gloria Riviera reports.