Flysch, a stockpile of granular sediment consisting of changing layers of sandstone, marl and limestone, is one of the most characteristic geographical and geological elements of Slovenian Istria and the coast. Here we used wonderful layers of almost geometric shapes as a starting point in the design of portals of the Markovec highway tunnel between Koper and Izola.

Our aim was to show the sandstone layers as they had been exposed when digging into the clear terrain. Therefore, we joined forces with statics and geomechanics, and developed a special mesh anchor system to let the horizontal lines of sandstone rocks stick out of the steep slopes of the tunnel portal, thus displaying this particular geological composition.

Project name: Tunnel Markovec

Location: Koper

Client: DDC

Area: 18,700 m²

Project: 2005–2009

Execution: 2014

Bruto team: Matej Kučina, Urban Švegl, Eva Prosen

Architecture: Elea, Damjan Bradač

Photo: Miran Kambič