This is a map of the battle to free death so monsters can die and go back to Tartarus and stay there. This is my favorite scene in the Son of Neptune in the Heroes of Olympus series by Rick Riordan. The Son of Neptune is the second book in the series after the Lost Hero.
They need to free death. If they don’t there won’t be a way to win the war because the monsters would be immortal just like gods. The main characters are Frank who is son of Mars(Ares), Hazel who is daughter of Pluto(Hades) and Percy who is The Son of Neptune(Poseidon). Percy is brave and courageous(and maybe a little stupid too). It takes place in Alaska and is probably in about 2013/2014. The book is fast paced and you cannot put it down if you like greek mythology.
Death is the blue part on the glacier. He is in chains.