FARINDOLA, Italy — Some of the lucky ones were sipping hot tea near the fireplace in their mountain resort hotel, waiting for snowplows to arrive so they could finally go home after a winter holiday made nerve-racking by a day of ground-shaking earthquakes and heavy snowfall. A few other guests nearby tumbled off their chairs in the elegant reception hall. An avalanche of snow — and not a tremendously powerful earthquake as survivors first imagined — had just barreled down the mountainside Wednesday evening, smashing into the Hotel Rigopiano and trapping more than 30 holiday-makers, including four children, and workers inside. On Sunday evening, rescuers spotted a man’s body in the wreckage, raising to six the number of confirmed dead. While the nine people who were eventually rescued, including all the children, remained hospitalized Sunday, some details of their harrowing survival accounts began emerging, through family, friends and rescuers. Suddenly, “everything collapsed on top of us, and I didn’t understand anything anymore,” Galassi, a 22-year-old university student, told Radio Giulianova.