We're talking about the 'Ogdru Jahad' here so the song is simply a taste of the kind of ruminations those dudes go through trapped in their stony prison waiting for the time to come when they will be free again. The 'Ogdru' are pretty much Mike Mignola's (Hellboy) version of Lovercraftian ancient gods who once held dominion over the earth and wait to do so again. The 'Frog Legions' seem like Mike's nod to the Lovecraft's deep ones, bent on helping their masters awakening and taking over the earth again.
We're talking about the 'Ogdru Jahad' here so the song is simply a taste of the kind of ruminations those dudes go through trapped in their stony prison waiting for the time to come when they will be free again. The 'Ogdru' are pretty much Mike Mignola's (Hellboy) version of Lovercraftian ancient gods who once held dominion over the earth and wait to do so again. The 'Frog Legions' seem like Mike's nod to the Lovecraft's deep ones, bent on helping their masters awakening and taking over the earth again.