The structure was apparently begun by a man named A. H. Hood, with the intention of generating wind power, in 1923.

A vertical cliff, known as the Lace Curtain, is present on the north flank of the volcano, formed as a result of storm wave action.

This name originated from the distinct white, lace-like pattern seen on the cliff face, caused by partial cementation of the tuff by minerals deposited by groundwater.

The ash grains are variably vesiculated, a texture typical of material erupted during phreatomagmatic activity, which involves direct interaction between magma and water.

The uppermost part of the mound consists of moderately vesicular ash with lapilli, passing up into ripple-marked beds at the base of the overlying cone deposits.

[7] The cone consists of steeply dipping layers of mainly palagonite, formed by the alteration of the original basaltic glass.