EPECUEN, Argentina A strange ghost town that spent a quarter century under water is coming up for air again in the Argentine farmlands southwest of Buenos Aires. Epecuen was once a bustling little lakeside resort, where 1,500 people served 20,000 tourists a season. During Argentina's golden age, the same trains that carried grain to the outside world brought visitors from the capital to relax in Epecuen's saltwater baths and spas. ... Then a particularly heavy rainstorm followed a series of wet winters, and the lake overflowed its banks on Nov. 10, 1985. Water burst through a retaining wall and spilled...