Here is a link to Monolith-tracker. Check it out. seems there are many more than the ones reported here in the US and according to what this group found out they say after reviewing Google Earth that it’s been here since 2016. I personally feels it been here since 2017 - The Great Eclipse.
Now, after reading Doctrines and Covenants Page 254, which speaks of how the men of that time were told to go ahead and prepare a place in the West for the poor, widows etc., v. 8. Interesting enough v. 10 states “TMH shall locate a ”Stake of Zion.”
Could these Monoliths be the ”Stakes” aka markers (also a sign that Gabriel is here), be what TMH is placing around the world to alert his people (yes) and marking territory! I’m not sure and I’m still consulting with our ABBA on this.
In the first movie when the city is sinking, I’m not sure if you noticed, but there are 12 gigantic sentinels that guard the city that come to life to protect the city with the force field before it goes under.