While dismembering Horton's works, here are a f...

While dismembering Horton's works, here are a few 4x croppings of the lower left corner 'thread' item seen. Not much image detail, but either the pixellation has vignetted qualities, or the 'wire' or thread is braided or sectioned. Positive, negative, posterized at 32 tones and solarized to show the isolation of the wire tonalities and the odd dark spot midway along it. The darkest item on the cropping is the dark spot.
The last is a positive solarized slightly to show how the reduced pixellation also shows strong patterned brightness variation.
A regular build to whatever 'it' is.
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Does not appear metallic to me.