Yes, PiĆsudski Mound renovation. Those mounds suck water like sponges and need earth works every few years. Very costly business but tradition is more important.
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The bag makes it look like it is designed to trap something but there is a roof of sorts, so if it were a trap it would have to be a flying animal. I don't think I am even close but it's the best I can do for now.
Is it a butterfly trap?
I met a pigeon farmer today, he caught a tagged pigeon right there. Pigeon racing is very popular in Dublin, or at least it was.
Why do people go train spotting? I don't know, their wings are pretty (the butterflies, trains don't have wings to my knowledge, maybe if I went train spotting I'd know for sure:)
do they give milk?
:) Is that a Polish delicacy, must take a load of butterflies to get a thimble full.
Yes! More exactly, a trap for moths destroying forest.
So does it glow or have a light to attract them?
Who are they and where?
They are the Wisla hooligans at home?
Cavemen at a museum? You know there were very few people who lived in caves back then, why would you? they are not the best places to live but they do preserve remains well and so we call them cavemen, as the places they did live have decomposed.