A Mountain Walked is an oversize anthology with almost 700 pages. S. T. Joshi has selected the best of the reprinted Cthulhu Mythos stories and combined them with over a dozen new works written just for this anthology. This book has over 25 stories, including new stories by Joseph S. Pulver, Sr., Donald Tyson, Cody Goodfellow, Caitlín R. Kiernan, Jonathan Thomas, Laird Barron, Michael Shea, Patrick McGrath, Mark Samuels, Gemma Files, and others.