The silversword plants (Argyroxiphium) grow around 9000 feet up on the island. Their leaves reflect. (Photo from Wikipedia). Fencing is to protect from invasive goats which have demolished their populations.
What follows is a poem full of personal gnosis.
The Silversword Alliance
the swords flash silver
in the mountain’s life,
the sun rose over the heads
of the many lost below
but here we raise the blades
of allegiance to the Cloud Lord,
an archaic league remade,
held high for the future.
where the sanctuary reigns
high like an eagle’s aerie
in the narrow valley we train
below the red house wary
the plants flash in the ash soil,
the alliance in mirrored din
reflects over world’s turmoil.
Sword of Nuadha.
Finnchuill's Mast 