I don't know what the comment is at this
webpage, but I think I agree - it's about the flag of the commune of
Długołęka in the county of Wroclaw, Lower Silesia.
Flagdescription: three horizontal stripes, very pale blue, bright blue,
very dark yellow, proportioned 1:4:1. Flag adopted 27 February 2004.
Arms: (2 shade of) azure, dexter a plant of three branches issuing
from a marshy base, sinister a tree issuing from a terrace, all argent;
in base a lozenge or, an eagle sable, charged on its breast with a crescent
or pointing upwards.
Old German name: Hundsfeld.
Jarig Bakker, 4 Sep 2008
Długołęka Coat of Arms
image by Jarig Bakker, 4 Sep 2008
adopted 27 Feb 2004