拉森火山国家公园冬季出游先查路况：园内主路关闭、无加油站，玩雪橇是冬季头号受伤原因
位于加州东北部的拉森火山国家公园，冬季是一座偏远的高海拔雪山公园。国家公园管理局的冬季安全页提醒，入冬后园内主路和支路通常关闭，园内冬季不提供加油，手机信号多数地方没有或极不稳定，服务非常有限，出游前要按「自备自救」做准备。
冬季通常能到达的，是西南入口附近的 Kohm Yah-mah-nee 游客中心（经36号公路）和西北入口附近的 Loomis 广场与 Manzanita Lake 一带（经44号和89号公路）。部分公路的除雪并不稳定，36号公路通往西南入口的路段由州运输部门维护。两处入口附近提供免费无线网络，公园咨询电话是 (530) 595-6100。
除雪结束时间也要算进日程：大雪天，西南区域的除雪在下午1时30分结束，游客须跟在除雪车后面离园，通常最后一辆除雪车在下午2时30分离开西南区域。天气不可预测，冰雪路面会增加车程时间，出发前要看天气预报，并为车辆备齐雪铲、冰铲、沙子或猫砂、防滑链、搭电线、拖车绳、水和食物等应急物资。
游玩的风险点也很明确：玩雪橇是园内冬季游客受伤的头号原因。公园还提醒留意失温和冻伤的早期症状，失温者体温低于华氏95度应立即就医；冬季保暖穿羊毛或合成纤维，不要穿棉质衣物。（来源：国家公园管理局）
Winter Visits to Lassen Volcanic: Main Park Road Closed, No Gas in the Park, and Sledding Is the Top Winter Injury
Lassen Volcanic National Park, in northeastern California, becomes a remote, high-elevation winter park once the snow arrives. The National Park Service's winter safety page warns that the main park road and park roads are expected to be closed in winter, that no gas is available in the park during the season, that cell service is limited to none in much of the park, and that services are limited, so visitors should be prepared to self-rescue.
In winter, access is typically to the Kohm Yah-mah-nee Visitor Center near the southwest entrance, reached by Highway 36, and to Loomis Plaza and the Manzanita Lake area near the northwest entrance, reached by Highways 44 and 89. Some highways may not be plowed consistently, and Highway 36 to the southwest entrance is maintained by the state transportation department. Free Wi-Fi is available near both visitor areas, and the park information line is (530) 595-6100.
Plowing schedules shape the day as well: during heavy snowfall, plowing in the southwest area ends at 1:30 p.m. and visitors must exit behind the snowplow, with the last plow typically leaving the southwest area at 2:30 p.m. Weather is unpredictable and icy roads add travel time, so the park advises checking forecasts and carrying a car emergency kit with a snow shovel, ice scraper, sand or kitty litter, tire chains, jumper cables, tow ropes, water and food.
The park is blunt about the top hazard: sledding is the number one cause of visitor injury in winter. It also urges visitors to watch for early signs of hypothermia and frostbite, noting that a body temperature below 95 degrees Fahrenheit requires immediate medical attention, and to dress in wool or synthetic layers rather than cotton. (Source: National Park Service)
来源：国家公园管理局
发布：GSM·美国（发布链接）
图片来源：图：拉森火山国家公园冬季雪地救援演练场景。国家公园管理局图片。 / Photo: A winter rescue exercise in the snow at Lassen Volcanic National Park. Image from the National Park Service.
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