Stairwell Echo Trek

My boots pattered down the quiet corridor until I reached the heavy iron door of the stairwell! It was propped slightly open with a red rubber wedge. I squeezed through and found giant concrete steps climbing up into the dark. I planted my boots on the smooth bottom step and leaned against the painted metal handrail. "Yahoo!" I called out, and whoosh—a grand, bouncing echo rolled all the way up the concrete shaft! It sounded just like a cavernous pipe underground. I gave the sturdy handrail post a proud pat and sat down to rest my boots for the night.