This is considered part of teh Canyon of Secrets but, your not actually there until you reach the end of these tunnels. It's a maze full of blood thirsty bats that'll drink you dry. It's only safe from them in the rainy season of spring but, that's when the canyon floods and you'll never reach land then. Many go into the tunnel. All but few die and those few that don't die in the tunnel die outside of it or their memory is lost forever.
