According to this web site here is what this image represents:
This ASTER image of Mount St. Helens was captured one week after the March 8 ash and steam eruption, the latest activity since the volcano's reawakening in September 2004.

The new lava dome in the southeast part of the crater is clearly visible, highlighted by red areas where ASTER's infrared channels detected hot spots from incandescent lava. The new lava dome is 500 feet higher than the old lava dome, and still growing.

In this band combination, vegetation is green, snow is light blue, and bare rocks are tan. This image combines visible and infrared bands, covers an area of 24.4 x 21.9 km, and is centered near 46.2 degrees north latitude, 122.2 degrees west longitude.

Here's a story that says "The Johnston Ridge Observatory, located 5.5 miles from St. Helens' crater, will reopen May 6, and the five-mile no-go zone around the mountain will be lifted."

Rangers are issuing climbing permits for later in the year, but chances are termed "remote" that the climbing will actually be allowed.

The Longview Daily News, which won a Pulitzer Prize for its coverage of the 1980 Mount St. Helens eruption and the aftermath is publishing stories from 25 years ago. Here's the story from March 25, 1980, about earthquakes rumbling under the mountain. You have to remember that there were lots of small earthquakes and minor eruptions leading up to the big, May 18, 1980, eruption. Makes for interesting reading.

The News Tribune in Tacoma is doing a similar look at history.

Here's a story about how the scientists are surprised by the latest outburst.

What scientists do know is that the plume rose very rapidly and much higher than in previous months. That indicates that there was an explosive element inside, rather than just a collapse of the crater's roof. "The fact that it rose so fast and so high means it's not just a simple collapse of the lava dome," said Major. "If so, the plume would have risen more lazily."

Here's the latest on today's spectacular event.

(AP) - A glacier in the crater of Mount St. Helens has gotten a name, but it may be short-lived as emerging molten rock continues to warp and melt the snow and ice.

The Washington State Board on Geographic Names unanimously chose Tulutson, the Cowlitz Indian word for ice, last week over three other finalist names _ Crater, Spirit and Tamanawas, a loose tribal translation meaning "spiritual guidance."

This spring marks the 25th anniversary of the devastating eruption of May 18, 1980.

In the succeeding years the glacier formed on the inside of the south wall of the gaping, horseshoe-shaped crater that opens to the north. Snow accumulated each winter, became compressed into ice and was further protected from sunlight and warm weather by rock and debris falling from the steep slope.

The glacier is now wrapped around the 876-foot-high lava dome that was formed in a series of much quieter eruptions between 1980 and 1986. It is one of the few glaciers on Earth that have grown during the past few years. Most glaciers have been shrinking. a development cited by many scientists as a sign of global warming.

The newer lava dome, still growing, has severely warped the east arm of the glacier dramatically and the main part of the glacier has been slipping northward down the crater slope at about 4 feet a day, according to the U.S. Geological Survey.

The amount of volume lost in the last five months remains undetermined.