Pretty much my observations are that the soil levels seem absurdly high and in instances where these churches have been restored significant amounts of soil have to be removed. And even then it appears that the buildings may extend even deeper. the windowsare far to low to the ground inviting banditry and requiring metal grates. often we see strange metal wiring going throughout (to thin to be structural) the church and connecting to the faraday cage like onion domes. Also the amount of red brick used in the construction of these churches is staggering. Often times these buildings will have walls a meter or more thick.
Many of the less ravaged structures have cast iron floors that are highly resistant to rust.
You will notice no chimney's in any of these shots. This will become important as we notice more details and additions adapting these buildings to the possibly recent conditions of the frozen Northeast.
I watched this video to get a better view on the situation inside these things
The researcher notes that up close we have 3 distinct structures, 1 the main building, 2 the tower and 3 the latter attachment of the two and addition of an alter.
Noting the difference in the quality of the brick and the complexity of the brick work itself.
Here we see something that will become familiar, look how they unceremoniously chip big holes in the brick work where they need to attach new floors or stairs probably made of wood that have since rotted away. Clearly not part of the original design.
Here we see the imprint where two separate roofs have been hastily added on and since rotted away. This type of slanted roof become necessary when dealing with snowy conditions.
Even with the Soil accumulation it should be noted just how tall these ceilings are. Imagine heating this thing.
Here we get the most obvious indicating that the tower and temples were connected much later.
Here we can assume the needed a stove or several so they just busted a hole in the wall to funnel a exhaust pipe through
It even appears that the walls originally had spaces in between them, Pneumatic heating and cooling?
Some more shoddy holes for stove pipes.
Here we get a demonstration of the acoustics inside the main temple.
Here Nik research does his own retelling of the video.