To get metal cap you need to enter swimming beast star and ride dinosaur to door, not floor switch near door and go left then you will see tunnel to water fall and there is a final switch but water current is strong so be careful and be careful of flying red guy spitting bullet at you.

222poc
toopoc
tupoc
tapac
tapoc
tapo2c
2pcost
cost
222
tup[acccss yyupoc rapr

tanks

clack

░░░░░░░░▄▀█▀█▄██████████▄▄
░░░░░░░▐██████████████████▌
░░░░░░░███████████████████▌
░░░░░░▐███████████████████▌
░░░░░░█████████████████████▄
░░░▄█▐█▄█▀█████████████▀█▄█▐█▄
░▄██▌██████▄█▄█▄█▄█▄█▄█████▌██▌
▐████▄▀▀▀▀████████████▀▀▀▀▄███
▐█████████▄▄▄▄▄▄▄▄▄▄▄▄██████▀
░░░▀▀████████████████████
youve been visited by the fedora of mystery

:]