The cliff’s name is derived from the Latvian word 'siets' (sieve), referencing the thousands of small, porous holes eroded into the sandstone surface.
The sandstone here is composed of fine-grained, light-colored quartz sand, which gives the cliffs their distinct white and yellowish appearance.
The outcrop was formed approximately 370-380 million years ago during the Middle Devonian epoch.
It is one of the most significant sites for studying Devonian sedimentation in the Baltic region.
Groundwater springs emerging from the base of the cliff play an active role in the ongoing erosion of the sandstone walls.
Sietiņiezis is the largest white sandstone outcrop in Latvia, stretching 400 meters along the right bank of the Gauja River. The geological monument is defined by high, vertical walls reaching 15 meters in height, characterized by dense, honeycomb-like weathering patterns. Visitors access the cliff via a network of wooden boardwalks, staircases, and maintained forest trails. The structure comprises Lode Formation sandstone deposited during the Devonian period. The site features a prominent natural arch and several small caves created by groundwater erosion. It is protected as a geological and geomorphological natural monument within the Gauja National Park territory.
From the river bank looking up at the central cliff face where the 'sieve' patterns are most visible.
Wear sturdy, closed-toe hiking footwear, as the paths can be sandy, uneven, and slippery after rain.
Bring insect repellent during the summer months, as the forest environment near the river attracts mosquitoes.
Follow the marked trails strictly to prevent erosion of the fragile sandstone cliff faces.
Do not attempt to climb the vertical rock faces, as the sandstone is soft and prone to crumbling.
Stay on designated boardwalks and paths; do not carve into or climb the sandstone cliffs.
