....or, especially if you're in a hurry, down the main road.

Everyone wants to know where to go in Yellowstone to see the bison. A good place to find them either alone or in herds is Lamar Valley....

The Yellowstone River runs through Lamar Valley.

Tower Fall is yet another attraction just off the main road on Yellowstone's north side.

Yellowstone has five entry points: the south, the north, the northeast, the west and the east. This one, the north entry from Gardiner, Montana, is the original. The arched gateway makes it a much grander entry than the others.

This is the second 45th parallel sign I've come across in my travels. The first one was in Leelanau, Michigan, on the Leelanau Peninsula.

When the elk are out, so are the park rangers. But it's not the elk they're trying to control, it's the tourists with cameras that they have to watch. There are many reminders posted that the animals are wild, and therefore unpredictable, despite their gentle faces and seemingly tame dispositions.

A sure place to find them grazing about on the manicured lawns, especially in the mornings, is here at Mammoth Hot Springs, under the trees, in front of the post office and between the buildings.

Golden Gate Pass and Canyon, with thewaterfalls (right). An interesting fact board at the lookout point to this canyon showed the pass in the days when the only transportation over it was horse and buggy.

Calcite Springs Overlook. The calcite springs are yet another geological phenomenon on Yellowstone's north side. Chemicals from the hot water vents on the springs gradually turn the color of the cliffs to the whitish yellow you see.

The basalt cliffs below and right are are in sharp contrast to the white calcite springs.

Massive boulders line the main road of Yellowstone near the Golden Gate Pass.

A lone petrified tree stands fenced in for its own protection from vandals and souvenir seekers.

Above and Left: You can identif Big Horn Sheep by the terrain on which they graze. Their sure-footedness is made for the steep, rocky cliffs.

Above and Left: Sunset at Fountain Paint Pot geyser field.