Flash-fire of the final rays
Flames upon the walls
As if the battle rages again.
Intense light deep-shadows
The seams between boulder and boulder
And the pits in these irregular rocks -
Until the burning source recedes,
Leaving the wall ancient again:
Softer, flatter,
Bluing in the dusk.
A pale moon, transparent as a shroud,
Rises above it,
Bleaching the battlement to bone
Under its luminous light.
Lillian Susan Thomas
http://www.poemhunter.com/poem/alamo-dusk/