Improved Darkvision

(Epic Level Handbook, page 58, DnD 3.0)

[Epic]

Your ability to see in the dark is greater than normal.

Prerequisite

Darkvision

Benefit

The range of your darkvision doubles. This feat does not stack with darkvision granted by magic items or nonpermanent magical effects.

Special

This feat may be taken multiple times. Its effects stack. Remember that two doublings equals a tripling, and so on.