Exploration and Navigation

The hills are shadows and they flow
From form to form and nothing stands;
They melt like mists, the solid lands,
Like clouds they shape themselves and go.

- Tennyson

The face of places, and their forms decay;
And that is solid earth, that once was sea;
Seas, in their turn, retreating from the shore,
Make solid land, what ocean was before.

- OVID, Metamorphoses, XV
- OVID, Metamorphoses, XV

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