The Vertical Earth Kilometer

The Vertical Earth Kilometer consists of a solid brass rod five centimeters in diameter extending straight down into the ground for a kilometer, marked by a red sandstone plate at ground level. Located where footpaths intersect near the Fridericianum museum, the brass sections connect together to form one continuous piece.

The installation was completed in 1977 after a specialized drilling team spent seventy-nine days on the project. The work involved boring through six distinct geological layers using specialized equipment.

The artwork expresses a relationship between what we see on the surface and what lies hidden below. Visitors notice only a small brass circle on red sandstone, yet the main piece stretches far beneath them.

The artwork sits freely accessible in a public park where anyone can visit without advance notice. The best time to view it is in clear weather when the red sandstone marker stands out clearly.

Though the piece extends enormously deep, only a small brass disk appears above ground, which was the artist's intention to remain mostly hidden from view. This contrast between the vast underground extent and the tiny visible portion stays with visitors long after they leave.

Location: Kassel

Inception: 1977

Creator: Walter De Maria

GPS coordinates: 51.31320,9.49670

Latest update: December 7, 2025 20:25