Lake Upgrade

The Crystal Lake is an artificial lake that was created as part of mansion's construction to act as a pure water source that the inhabitants of the mansion could safely drink from, and as a result of the ambitious project's success, the lake is absolutely safe to drink as well as swim in, since any disgusting stuff is treated and filtered out automatically as it is pumped to and from the mansion, which is why it has its name. As well as this, water is also pumped into the lake from the river and out of the lake into the river to keep water cycling. In the event that the river loses its flow and perhaps even cuts off, the pumps can be completely closed and the lake can remain.

At the bottom of the lake is a rock formation that looks like the each was just removed from around it. It looks like an underground cave that was uncovered during the creation of the lake.