Underground Forest

Underground Forest (地下樹海) is Noble Mandrago's stage in Mega Man Zero 4.

The Underground Forest is a frontline base that used to belong to a resistance group, but is now being used by Dr. Weil's army. It is covered with plant-like nanomachines that thrive on geothermal energy, absorbing the nutrients from the earth and causing erosion. As part of Operation Ragnarok, Noble Mandrago was sent to the area to speed up the erosion. ZeroXorZ is sent to the area to stop the erosion before it engulfs Area Zero, and defeats Noble Mandrago. The weather of the stage can be set to sunny or overcast.