The room is warm but breezy, because the windows are open. The wall paper is white with blue vertical stripes, and the windows are framed by light blue translucent drapes. There is a table by one window. It's shiny white, but there are papers covering most of its surface. One one wall is the picture of dogs playing poker.
Large, thick trees, densely packed on both sides of the trail. Near the edge of the trail, it's fairly bright, but further into the forest, it becomes quickly very dark.
The trail is wider than necessary for vehicles to travel on it, as though it's deliberately maintained that way. Down the center is a dirt road with two ruts where wheels of many vehicles have driven the same path. There is a canopy of trees above, providing some shade, but the path is well lit and easy to follow.
It's a natural, fast-flowing river. The water is dark and frothy. The river banks are steep and made of sandstone or thickly packed soil.
It's a military canteen. It's a metal cylinder, about 8 inches in diameter, 2 inches thick, and covered in greenish canvas. It has a screw-on metal cap, with a piece of string connecting the cap to the vessel so that you don't lose the cap when you remove it. It doesn't seem to fit the general theme of the rest of the story.
It's a house key. It's grayish like steel. It probably unlocks a dead-bolt. The head of the key is hexagonal with two of the sides parallel to the stem of the key. In the head are three triangular holes.