Excavator

“	An expensive way to create a new riverbed when the naturally occurring ones are insufficient. Use excavators as a last resort as they poison the land around them.	„
	~ Excavator description in the Handbook

The Excavator is a building in Terra Nil that excavates a straight line through any tiles in-front of it and replaces those tiles with Dry Riverbed. The Excavator is part of the Tier 1 Buildings. They can only be built on ground and require power to work.

When built, excavators will convert the surrounding 96 Greenery tiles back into Wasteland but won't effect other Biomes.

The excavator will cut through all tile types but will stop when it reaches a building or Rock tile. It will destroy any tall pines in its path.

Elevation

The Dry Riverbed created by the excavator is produced at the level of the building. If the excavator is built on flat ground, the Dry Riverbed will cut through all higher elevation equally. When the excavator is built on an elevated tile, the Dry Riverbed will cut through all higher elevations but not lower elevations. When the excavator projectile encounters a change in elevation, it will lower the Dry Riverbed down that many tiles. Any higher elevations encountered there after will be reduced to the new lowest tile level.

Version comparison

The 3x3 excavator is both more expensive and larger than its 1x1 counterpart but has the advantage of one tile of additional range. The Dry Riverbed is produced from the center tile of the excavator but only one of the nine titles needs to be within range of power in order for the building to be built. This gives the 3x3 additional reach.