Bloons Monkey City Terrain Types (Wacky's Conception)

This is a page where you can put your ideas for different terrain types for Bloons Monkey City. Here's an example of the format that I'd like to see:

Terrain Type Name

 * Description: This is a description.
 * Buildings that can only be Placed here: This is a list of buildings that can only be placed here. If anything can be placed here, put "-all-".
 * Restricted Towers: FOO
 * Favoured Towers: FOO
 * Special Rules: *only applies to Special Terrains*
 * Rewards: *only applies to Special Terrains*

Tundra Terrain

 * Description: Swampy area with lots of areas to place both land and water towers.
 * Buildings that can only be Placed here: -all-
 * Restricted Towers: Snipers, Monkey Aces, Mortar Monkeys
 * Favoured Towers: Ice Monkeys, Monkey Apprentices, Dartling Gunners

Craton Terrain

 * Description: Lots of rocky ground. Sometimes there's a bit of harder rock that you can't place towers on, because that's too high. Problem, erosion? XD
 * Buildings that can only be Placed here: FOO
 * Restricted Towers: Banana Farms, Stealth Monkeys
 * Favoured Towers: Super Monkeys, Spike Factories

Geyser Field

 * Description: This mysterious geyser field will prove useful in maintaining geothermal power plants. However, it's got an encampment of bloons on it that are all regen, and some of them are camo! Face 10 rounds of all these bloons. Watch out for those Mini-M.O.A.B.s!
 * Buildings that can only be Placed here: FOO
 * Special Rules: 10 rounds of all-Regen bloons, with some camo-regens; lots of Mini-M.O.A.B.s; Same towers as on Craton Terrain; Use Geysers to blast bloons away from the track and scald them with boiling water (scalding is similar to corrosive glue, but light blue and steamy)
 * Rewards: 1000 City Cash, 50 Bloonstones, and Scalding Spell special item (adds a powerful attack to Monkey Apprentices that acts like a less powerful version of the scalding attack