Once they had a way to control and drain whatever land areas they needed for construction, Imagineers in Florida and California began various projects simultaneously. The Disney staff wanted the resort built in two years. They hired an outside group of engineers to oversee construction, but this group said it would take at least five years to complete the project. The Disney staff subsequently let that group go and created their own team. At the time, Bay Lake was the only natural body of water on property. It was also one of the first areas of property Walt wanted to buy (along with an island in the middle of it, now called Discovery Island). In early planning stages, designers decided to build a man-made lagoon adjacent to it. There would be plenty of space for water recreation, and the lagoon would complement the setting of the Polynesian Village Resort. It could also offer Guests the feel of an exotic journey to the theme park's faraway lands. Bay Lake was first drained with pumps and its bottom layer of muck scooped out. Next to it, over seven million cubic yards of earth were dug up for the lagoon and used as a foundation for the MAGIC KINGDOM® Park. Sand found underneath all the muck was used to line the four and a half miles of beach around the newly created Seven Seas Lagoon. Bay Lake and the 172-acre lagoon were then refilled with water from the surrounding wetland and stocked with more than 70,000 fish.