If you're planning to tackle the Muir Snowfield during a late-summer trip to Mount Rainier National Park, be sure to pack your crampons and ice axe, as deteriorating snow conditions are making this hike a little trickier than normal for this time of year.

If you've ever stayed at Paradise Inn on the lower flanks of Mount Rainier, no doubt you've longed to hike higher up the mountain. Those who aren't making a summit bid often are satisfied with making their way up to Camp Muir, a shelter roughly 4.5 miles up the mountain from Paradise often used by climbers heading up, or coming back down, the mountain. While this is a popular day hike in summer for those experienced with hiking on snow, Mount Rainier Chief Ranger Chuck Young says warm weather is hastening the mountain's snowmelt and creating additional hazards on the Muir Snowfield.

According to the chief, the annual snowpack on the Muir Snowfield has melted out unusually early this year. This has exposed bare glacier ice and crevasses on the route from Paradise to Camp Muir. From about 8,200 feet and up on this route the terrain often exceeds a 25-30 degree slope. The steepness, coupled with the exposed glacier ice, make for extremely slippery and hazardous walking.

The glacier ice is not kind to exposed skin if you should fall and slide on it, he says. There have been numerous cases this year of slips that have caused fairly severe abrasions. Also this year, the exposed ice from 9,500 feet to 10,100 feet has opened up crevasses that require skill and care in safely picking out circuitous routes that avoid the open cracks in the ice. Over the years, people have injured themselves by falling into the crevasses or left dangling above them.

The trek to Camp Muir can be an enjoyable hike in these conditions if good judgment and proper precautions are taken. Chief Young asks that you please follow these helpful hints for safe hiking up to Camp Muir:

* Get the latest route conditions at the Climbing Information Center in Paradise (360-569-6009) or the Wilderness Information Center in Longmire (360-569-HIKE, 360-569-4453)

* Carry and use crampons and an ice axe

* Cover all skin with durable full-length pants and long-sleeve shirts

* Download the Muir Route Bearing Sheet (http://www.nps.gov/mora/planyourvisit/upload/GetYourBearings.pdf)

* Carry a map, GPS, and compass, and know how to use them. Track your route on the way up, track-back on the descent

* Travel to Camp Muir with someone. If you should fall in a crevasse, there will be someone to help you or go for help

* The only anchors that work in the glacier ice are ice screws, should you choose to belay over the crevasses with a short section of rope

* Weather can deteriorate at any time. Get up-to-date forecasts and prepare for cold, wet weather