History of Bar-Zel, Nine-Touched

Overview

One of the seven Nine-Touched triumphs in the Stories: The Nine category. Bar-Zel, Nine-Touched is found in Savathun's Throne World. One guide lists 15 Legendary Marks for it, plus 50 more when the whole category is complete (single source, unconfirmed).

How to complete

1. Go to Savathun's Throne World while a Distortion is active there; corruptions only appear in a Distortion destination. Check the hourly schedule and look for red icons in the Director.
2. Land at the Quagmire and head northeast to the Florescent Canal, where the Sepulcher Lost Sector is.
3. Enter through the normal entrance, not the Lost Sector banner, which starts a harder version.
4. Look up on entering, find the red corruption and destroy it. This draws the Nine's attention.
5. Fight through the Lost Sector and defeat Bar-Zel at the end.

Sources note

The two guides agree on location and steps. I could not open the YouTube video listed below, so it is cited from its title only.