Leiber, Fritz -- Swords Against Wizardry (Nehwon 4)

Leiber must have gotten excited about mountaineering, because a good third of this book is Fafhrd and the Mouser climbing a mountain, in detail. (Naturally, they take a break halfway to bed some magical princesses, then fight a duel at the top.) (Not with each other.) Later they get involved in politics in some underground empire.

Books I have acquired recently
All the books I own