The Son of Neptune(part 3)by Surya

They reach Alaska some way but getting to the glacier where death is chained is harder then they thought. Percy is almost dropped off a cliff by a griffin. Hazel almost drowns in a sea of mud. Frank almost gets crushed by a big blue giant butt. Then all of them race up a glacier on the back of a cursing horse. Then when they finally reach Thanatos Hazel and Frank apparently both have to die for him to be released. Will they die or will they leave him to rot?