Chapter 48

At Tuono, Duncan Idaho undertakes a solo free climb of the Sareer’s enclosing Wall, using youthful Tleilaxu-grown reflexes and childhood rockcraft to focus on each hold rather than the height. Below, Siona, Nayla, three Fish Speakers, Garun, and select Museum Fremen observe, having debated the attempt and Leto’s expected descent by cart and suspensors.

Idaho centers himself by rejecting thoughts of Leto and Hwi, converting resentment into resolve to defeat Leto for himself. He recalls Siona’s vow to honor her oath to command Fish Speakers but not as Leto intends, reinforcing his belief that Leto has become an implacable force opposed by the true Atreides spirit.

As Idaho climbs past minor rock failures, Siona promises to attempt the ascent if he falls. Nayla’s perspective reveals her paradox: absolute obedience to Siona despite Fish Speaker loyalty to Leto, and an intense, almost religious fixation on Idaho and fate.

Idaho reaches the top without pitons, signals the watchers, and surveys the Royal Road—an immense, smooth expanse marked by short pillars and flanked by sheer drops to a river gorge. He studies a bridge about three kilometers away, judging it militarily as both passage and potential trap, and notes the route Leto will take.

Having confirmed access and terrain, Idaho casts his light rope down the Wall to prepare the team’s ascent. The act galvanizes the conspiracy, while below, Nayla’s overwhelmed reaction underscores her fervor and the volatile mix of duty, desire, and impending confrontation as Leto’s arrival approaches.