This looks pretty fun and just when you think it's over, it starts getting real.
Shot somewhere in Poland judging from the comments
Nice!! I like the kids saying Kraken! So tell us what is happening in this video :)
This is a variant with a mixture of mercuric thiocyanate mixed with ammonium dichromate.
Early an adult - apparently in charge - says something equivalent to "you see a volcano now, but will the devil appear?" Then kids say "diabeł, diabeł" - devil, devil, some kid says "ośmiornica" - octopus, and then some other kid starts saying "kraken", in a voice that suggests "I know what it is, and you are all wrong". An adult asks "where do these kid know such words" and someone else replies - quite accurately if you ask me - "From the Pirates of the Caribbean"
Separate names with a comma.