The Crystal Palace Diving Institute - reservoir - Dexter house cellar - Cretaceous beach Anomaly was an Anomaly linking a bay in the Cretaceous to different locations in the present. The present side of the Anomaly moved locations along a temporal fault line, from the Crystal Palace Diving Institute to a reservoir twenty miles away then to an urban neighbourhood basement, while the Cretaceous side's location stayed fixed. The Anomaly was underwater, which meant that the Dexter home's basement was flooded when the Anomaly opened there, whereas in the reservoir, water was drawn out through the Anomaly into the Cretaceous.