Menhir

The Magic Menhirs are the most important gatherer buildings of Fairies of Tarm.

Description
A small but peculiar stone jutting forth from the ground said to be the work of Fairies. To many onlookers, this stone simply sat still and did nothing. To the Fairies, the world around them would slowly change as food and material fed their being.

Trivia
If you've researched the Window Unto Death tech at Tarm Dolmen and a Fey Golem died, it will spawn a mini version of Magic Menhir immediately, called Mini Menhir, having 250 HP and 0.25 Resource Trickle per second.