Characters/Pairing: Unnamed guards (reference to Ulmo)
Warnings: reference to death in battle
Disclaimer: Tolkien put the place on the map; Himring thought about it a bit.
A/N: In their war against the Dark Foe in the north, the elves built a fortress at the source of the river Sirion and named it Barad Eithel (Tower of the Well).
Below the guards' feet, Sirion flowed away southwards. Although its source was above in the citadel, here down at the outworks it was already swift and strong. Beleriand's great river--it served as an inexhaustible water supply for Barad Eithel, but the fortress had also been built to protect it where it was most vulnerable. Ulmo's voice and powers were in the living water, guiding and guarding elves and men. But if none guarded it in their turn from the Dark Lord, that guidance might well fail. Twice already, the enemy had been beaten back from the fortress with much loss...
A/N: This is really a (planned but previously unwritten) paragraph of my WIP "Such Great Deeds", slightly tweaked so that it can stand on its own, I think.