Three Word Prompt: In a Landscape by Dali

I'll never know how you could build this gate:

This time and place and structure to explore

A valley that exists behind my pate

Uncanny in new ways I can't ignore.

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I gaze at the horizon--distant, pale

I wonder at the 'hemoths on the coast

I tread with caution o'er the schist and shale

A single eye regards me and my past.

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These fibers are arrayed to block my way

As gingerly I sway, pursuing you;

I hope I might secure a moment terse

To ask you once: What was I meant to do?

You answer with a glance, then look away;

Miasmas waft from you, a poisoned curse.