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Exposing Volcanic Layers with Tephra and Concrete in a Geological Observatory

Author:
Bart Bliek
Exposing Volcanic Layers with Tephra and Concrete in a Geological Observatory

Project in-detail

Constructed from locally sourced tephra and concrete, the observatory exposes volcanic layers while providing an educational platform for visitors to engage with the geological history of Hverfjall.
5 key facts about this project
01
Constructed with locally sourced tephra, integrating the structure with its geological context.
02
The observatory exposes multiple layers of volcanic deposits for direct public engagement.
03
A prefabricated approach minimizes construction impact on the surrounding landscape.
04
The design features a combination of organic shapes and precision-cut stainless steel elements.
05
Visitors can ascend the structure to obtain panoramic views of the Hverfjall crater.

The Hverfjall Geological Observatory is located in Iceland, specifically within the Hverfjall tuff ring. It aims to improve the experience for visitors by providing a large-scale stratigraph that allows direct interaction with the geological layers of the area. The design concept focuses on making complex geological information accessible through a three-dimensional structure. This not only serves an educational role but also fosters a stronger connection to the volcanic history that shapes the landscape.

Design Concept and Form

The observatory features an organic form that stands in contrast to a ribbon made of precision-cut stainless steel that wraps around it. This combination emphasizes the relationship between natural formations and human-made structures. The ribbon draws attention along the ridge and creates a visual link between the colors of the earth and the sky. This attention to form enhances the overall experience for visitors engaging with the site.

Geological Context

Understanding the geological background of Hverfjall is essential to the overall design. The volcanic activity comes from an eruptive fissure in the Kafra volcanic system. This has led to both pyroclastic deposits and solidified lava flows. By exposing these layers within the structure, the observatory allows visitors to connect more deeply with the earth's dynamic processes, helping them appreciate the forces that shape the environment.

Materials and Construction

The design incorporates prefabrication to streamline construction processes. The observatory will be built in segments and placed on a submerged concrete foundation pad to minimize impact on the surrounding area. Concrete, mixed with locally sourced tephra, is the primary building material, linking the structure to its geological surroundings. Furthermore, galvanized steel will be used for the staircase, providing durability, while stainless steel panels will be employed for cladding, ensuring resilience against the harsh conditions.

Attention to Detail

Every part of the observatory is designed to enhance the visitor's experience with the volcanic landscape. The careful layering of materials and the contrast between different forms reflect the relationship between human experience and natural forces. As visitors move through the structure, they engage with the geological story of Hverfjall, allowing for a meaningful connection with the land and its history.

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MICROHOME 10: Celebrating Small-Scale Living with €100,000 Prize Fund and Kingspan’s Innovation

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Competition organisers

The MICROHOME 10 competition invites participants to submit visionary designs for off-grid, modular microhomes that push the limits of sustainable, small-scale living. Organised by Buildner in partnership with Kingspan and Hapi Homes, this tenth edition sets the challenge of designing a dwelling for two people within a maximum floor area of 25 m², encouraging bold solutions adaptable to any urban or rural location. The competition continues Buildner’s mission to foster innovative approaches to compact, energy-efficient housing that can address pressing global challenges.

This year’s edition offers a generous total prize fund of €100,000, including the Kingspan Award for designs that integrate high-performance Kingspan products and the Hapi Homes Award for a project selected for real-world construction. In addition to cash prizes, the winners gain international exposure through Buildner’s media partnerships, publications, and a dedicated MICROHOME magazine, further amplifying their ideas to the wider architectural community.

Key dates for MICROHOME 10 include the closing date for registration on 25 September 2025, the submission deadline on 29 October 2025 (11:59 p.m. London time), and the announcement of winners on 9 December 2025. These milestones ensure participants have clear timelines to develop and present their concepts, with early registration discounts available to support students and emerging designers worldwide.

MICROHOME

Design a new small-scale home concept in the 10th edition of MICROHOME — 100,000 € prize + construction

100,000 € Prize Fund / Kingpsan Edition #10 ideas COMPETITION
Prize 100,000 € + Potential realisation
Eligibility Open to all
Final registration deadline 25 September 2025

Enter an open architecture
competition now

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