Tanima sano Futatsu Taisho

Battle
The Valley of the Two Generals is where two of the greatest commanders in Rokugan's history, Matsu Kijoruko and Daidoji Wasutsubo, fought the Seven Day Battle. The battle lasted for seven days and in the end the two commanders faced eachother in a duel on the battlefield, surrounded by the dead and dying in the valley. Kijoruko was the victor of the duel, but succumbed tho her wounds from the duel moments later.

Holy Site
The battlefield has remained a holy site since then, a shrine dedicated to both generals standing where they fell.

Major References

 * Legend of the Five Rings Page 303