Eidus Das, the Walking Ruin

It might be a legend, it might be a relic from a lost age, or it might be something that once was, but is no more. Regardless, the name Eidus Das lives on in legend.

Description

Nobody alive can confirm whether or not the city of Eidus Das still exists, but it is widely believed that it once did. There are many stories as to where it came from or what eventually befell it. Some say that Eidus was once a proud and prosperous walking city built by a lost desert civilization. Some say it was built on the other side of the Barrier Mountains, and was changed in strange and esoteric ways to make the trek across. Still others say it was once an extension of the Great Machine on Cirros Mot.
One thing all the legends agree on is that, through disaster, time, or simple migration, Eidus Das fell into ruin and disrepair, left abandoned to roam endlessly with no direction or purpose. Unsurprisingly, the logistics of how the city could possibly function with no upkeep, no population, and no power source is not explained in the legends.
A few things are agreed upon by those who have claimed to see The Walking Ruin: it strides over the sands in an uncanny and surreal fashion on absurdly long, thin struts. Decades will pass between sightings, and even the most dedicated of investigators has not succeeded in chasing this apparent ruin down, either from the ground or by air.
Some legends say that Eidus Das did exist, and at some point in the distant past walked alone through the Eternal desert, but has since collapsed and been consumed by the sands. Others say it walked into the sea and sank. Yet others claim it was chased down, driven aground, and plundered for every last scrap of usable technology. Legends of its existence persist even to the present day, however.
The sightings are as varied as they are dubious: a prospector scouting for Dead Groves might say they saw the immense silhouette of an unknown city moving through a sandstorm. A traveler making their way to the sea might come across impossibly huge, oddly-spaced tracks that the wind hasn’t quite swept away. Explorers sleeping in the lee of the enormous petrified trunks that dot the desert might hear the distant, eerie sound of churning machinery, and see an immense darkness blot out the stars in the horizon.
If there is any truth to the legend, it can only be found within the confines of the lost city itself.