The Lake Hylia Crystal

"" is a TotK: in.

Overview
"TotK:" can be started in two separate ways. The first is by activating TotK:'s TotK: in the TotK:. The second way is to examine the TotK: on the TotK: above the TotK: in the TotK:. In either scenario, TotK: will hear a TotK: tell him to bring the TotK: to the TotK: in order to receive a TotK:.

Dropping the TotK: from the hole in the TotK: will cause it to fall directly into the TotK:. From there, TotK: can bring it to the TotK:. The TotK: states that it will now offer the TotK:. The TotK: then begins to float and grow, and after its green sheen disappears, it is revealed to be the entrance to TotK:. Following this, TotK: is able to enter the TotK:.