I don't think that is embossed into the carpet. The positioning is off for that and the pattern doesn't make sense. Those odd curved parts remind me of the chandelier.
ETA1: There is not a corresponding impression on the other side of the landing. I would think if it were intentional there would be a balancing, symmetrical pattern on the other side. IMO.
ETA2: I believe that is from the chandelier. Sorry to muddy the waters in this fashion, but I gotta say it. The big looping pattern that looks like flower petals? Those are from the strings of crystal hanging from the bottom of the chandelier. When set flat on a surface that is the shape those strings would make. And the more strongly indented parts in the middle are where the body of the chandelier was sitting. ETA 4: IMO.
Closeup of mansion chandelier: note the strings of crystal encircling the bottom.
This is not an exact match:
http://www.lampsplus.com/products/s...n-33-inch-wide-crystal-chandelier__n4236.html
But it is close enough. That lamp weighs 80 pounds. It took some weight to make those marks in that thick, plush carpet. And the area rug overlaps it. FWIW, it was mentioned in the PC that Ocean was sitting on that landing when LE arrived...
Those two rooms can be accessed through that door on the landing or from a staircase from the butlers pantry off the kitchen.
ETA 3: Excellent observation Quester!! :woohoo: