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Charred Hardwood Roofs Bridging Geological Fissures in a Volcanic Landscape

Authors:
Ramiro Carro, Santiago Perez, Facundo Hernandez, Juliana Lareu
Charred Hardwood Roofs Bridging Geological Fissures in a Volcanic Landscape

Project in-detail

Charred hardwood roofs interconnect dual caves, bridging the geological divide between tectonic plates while providing a multifaceted visitor experience within Iceland's volcanic landscape.
5 key facts about this project
01
Charred hardwood shingles provide both durability and a distinct visual texture.
02
The design captures and highlights the geological fissure between two tectonic plates.
03
Modular components allow flexibility for future expansion along the landscape.
04
Strategic roof placement enhances interaction with the surrounding volcanic features.
05
The structure integrates natural lighting to enhance visitor experience in caves.

The Iceland Cave Tower project is located in a unique setting at the intersection of the Eurasian and North American tectonic plates. The design explores the concepts of hiding and peeking, encouraging visitors to engage with the natural landscape. Three interconnected roofs link two caves, creating a cohesive structure that enhances the experience of the surrounding geological features.

Design Concept

At the heart of the design are three wooden roofs that serve to connect the two continental contexts. These roofs do more than provide shelter; they also define spaces and guide movement throughout the site. Their arrangement emphasizes the geological crack, inviting visitors to explore the relationship between architecture and nature.



Roof Structures

The Karlagjá roof acts as the main access point for visitors, leading them toward several programmatic modules. These modules facilitate access to the largest cave and the tower, promoting exploration through clearly defined pathways. In contrast, the Kvennagjá roof offers a quieter experience within the smaller cave, catering to those seeking a more intimate space.



Geological Integration

The Grjótagja roof is strategically positioned on the North American plate, taking advantage of the elevation difference between the tectonic plates. This placement not only creates a visual focal point but also provides structural stability against Iceland’s challenging weather. The design respects and responds to its environment, creating a thoughtful presence within the volcanic landscape.



Material Considerations

Materials play a key role in the project, linking it to the surrounding area. The roofs are constructed using prefabricated wood panels, which allow for efficient construction while maintaining a connection to the landscape. Charred hardwood strips enhance both the appearance and durability of the roofs. The timber structure and metal piles further strengthen the overall design.



The modular nature of the design allows for growth and adaptation over time. Structures can evolve along the geological crack, reflecting the ongoing changes in the landscape. This aspect of the project emphasizes the relationship between architecture and the environment, highlighting a commitment to respecting the natural setting.

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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

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