The delta and its star attraction, the Childs Glacier, make an unforgettable day trip by car or tour bus from Cordova, but if you have a couple of days, you can do much more. The backwaters, sloughs, and ponds beg to be explored by canoe. Bird-watchers will especially enjoy paddling here and visiting the boardwalks and blinds set up by the Forest Service. You can raft the rivers. There are excellent hiking trails and mountain-biking routes branching from the road, and Forest Service cabins to stay in. And the river itself has many miles of deserted sandy beaches for long walks or sand castles on a sunny day.

The delta seems to go on forever, a vast patchwork of marsh, pond, small hills of trees, and the huge, implacable gray river itself. The glacial silt it carries away -- some 2 million tons a day -- has built this 700,000-acre wetland. A well-maintained gravel road leads across it, all in Chugach National Forest, and the rangers have done a good job of providing ways and places to enjoy and learn about the area. The road itself is the old bed of the Copper River and Northwestern Railroad. It leads 48 miles to the Million Dollar Bridge. Built by Michael Heney, a magician of a 19th-century railroad builder who also constructed the White Pass and Yukon Route in Skagway, the 200-mile Copper River line was an engineering triumph that brought the mind-boggling wealth of the Kennecott Copper Corporation to ships in Cordova (read more about the mine in "Wrangell-St. Elias National Park & Kennecott"). The bridge over the Copper River was built in a race against time between two surging glaciers in 30-foot-deep, fast-flowing glacial water, during winter. It stood for 50 years, until the 1964 earthquake knocked down one end of one of the spans, driving it into the riverbed. In 2004, your highway dollars repaired that span, and once again you can drive to the other side, where an unmaintained road soon peters out into a rough trail.