Tentacles in the Ancient Ruins

Amy's explored ancient ruins her entire life, and now she has an opportunity to lead her own expedition. But the temple she's in charge of has strange symbols on the walls that intrigue her and haunt her dreams, symbols of an ancient myth from a lost civilization. While she's investigating the temple she stumbles onto a sealed-off room that holds the source of all those myths, and it's eager to show her how it matches up to the legend.