seaTac2

A massive segmental concrete block retaining wall is shown under construction, with workers in high-visibility safety vests visible at its base for scale. A watermark reading 'Photo courtesy of Hart Crowder' is visible in the lower left corner.

Notes

A massive segmental concrete block retaining wall is shown under construction, with workers in high-visibility safety vests visible at its base for scale. A watermark reading ‘Photo courtesy of Hart Crowder’ is visible in the lower left corner.

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