Yes and no... and we need to clear up the terminology a bit.
Tayari Plaza=TP=near the starting area=Dare's Pod crash site=the namesake of the first campaign mission=the location of your goal in the TP mission=the site of the cinematic at the end of the TP mission=the site of the Firefight missions "Crater" and "Crater (Night)".
It is located in District 05=D05
Because Tayari Plaza is a named place in the city and the name of a campaign mission, references to it can be confusing. At the SGP, a lot of work is done in the Mombasa Streets (MS) level outside of any of the six proper campaign missions. In this context, TP is used the most to refer to the actual plaza in D05. Perhaps CM-TP is a better designation for the mission as opposed to the plaza.
Anyhow, to your question:
There is a henge-like structure in the center of TP here but it is altogether different from Squidhenge. There are four slabs of dark material that look like stone columns in TP. No one has ever reported glyphs appearing on these structures. It is indeed located next to a "magic wall", but again we run into context. The Magic Wall in D04 gets so much press that people have largely forgotten or ignored the one in D05. No glyphs have yet been reported to appear on the D05 Magic Wall in TP. The most that has happened is that the banner on that wall has disappeared and reappeared.
Squidhenge is comprised of six stone columns. Glyphs cover each column. As you are probably well aware, it resides in D06. Its nearly-identical mirror room is in the inaccessible District 02. No one knows a darn thing about District 02 so far other than the fact that we can't get into it.
The "Sunken Plaza" is a nearly identical plaza to TP. It's in District 04 and is the site of the Magic Wall, per se. Glyphs abound.
Hope this clears things up!
