Geography of the European Netherlands European part of the country can be split into two areas: the low and flat lands in the west and north, and the higher lands with minor hills in the east and south. The former, including the reclaimed polders and river deltas, make up about half of its surface area and are less than above sea level, much of it actually below sea level. An extensive range of seawalls and coastal dunes protect the Netherlands from the sea, and levees and dikes along the rivers protect against river flooding. The rest of the country is mostly flat; only in the
Voyage to the Bottom of the Sea (TV series) On March 26, 2012, they released "Voyage To The Bottom Of The Sea: The Complete Collection", a 31-disc set featuring all 110 episodes of the series as well as bonus features. In Region 4, Madman Entertainment released the first two seasons on DVD in Australia on August 20, 2014. Voyage to the Bottom of the Sea (TV series) Voyage to the Bottom of the Sea is an American science fiction television series based on the 1961 film of the same name. Both were created by Irwin Allen, which enabled the movie's sets, costumes, props, special effects models, and sometimes footage,