Cave opening render — lunar lava tube entrance

01 — Hero

MON BAE

An Architectural Framework for Lunar Lava Tube Habitation.

02 — JOURNEY

Every Settlement
Begins With A
Journey

Lunar surface hazards including radiation, thermal extremes and micrometeorites

03 — CHALLENGE

The Surface Was Never
Meant For Us

RADIATION

THERMAL EXTREMES

MICROMETEORITES

Runge Pit — lunar pit opening

04 — DISCOVERY

A Place To Begin

Scientists have discovered skylights that reveal massive underground voids beneath the lunar surface.

These formations are believed to be remnants of ancient lava tubes, offering a natural refuge from the harsh lunar environment.

04 — ANALYSIS

Mapped In Three
Dimensions

LiDAR scans reveal the hidden geometry of lunar lava tubes.

04 — ANALYSIS

Natural Protection

Radiation exposure is one of the primary constraints on long-term lunar habitation.

Surface exposure can exceed 1 mSv per day. Within the cave, natural shielding reduces exposure to near-zero

Radiation analysis of lunar lava tube

05 — FRAMEWORK

One System.
Multiple Caves.

No two lava tubes are alike. Instead of designing for a single cave, Mon Bae uses a framework that adapts to each environment.

The cave defines the layout. The framework defines the architecture.

Different cave geometries with adaptable habitat layouts
Autonomous lunar construction system

05 — SCALE

Built To Expand

Autonomous construction enables continuous expansion using locally sourced lunar basalt.

New infrastructure can be fabricated as the settlement grows, reducing reliance on Earth-launched materials.

06HABITAT

The cave determines the architecture.

Every lava tube possesses a unique geometry, requiring architecture that can adapt to its surroundings.

Rather than imposing a fixed design, the framework responds to the available volume, creating a habitat unique to each cave.

Exterior habitat render on the lunar surface
Habitat integrated within the lava tube cave

07 — CONSTRUCTION

Building The First Settlement

Construction begins before the first crew arrives. Autonomous systems prepare the site, deploy infrastructure, and fabricate new structures using local materials.

01 — PREPARE

Autonomous systems survey the cave and prepare key construction zones before human arrival.

02 — DEPLOY

Initial habitat systems and construction equipment are delivered to the lunar surface.

03 — BUILD

Lunar basalt is transformed into structural components, enabling the settlement to expand using local resources.

08 — HUMAN EXPERIENCE

Descend Into The Settlement

Leaving the lunar surface behind, residents enter a protected underground environment designed for long-term habitation.

08HUMAN EXPERIENCE

Life Beneath The Surface

Protected within the lava tube, residents gain access to a stable environment designed for long-term habitation rather than short-duration survival.

Private quarters and operational facilities transform the settlement from infrastructure into a place people can call home.

Bedroom interior
Survey bay interior
Mon Bae final reveal

09 — CLOSING

Architecture should not impose itself on the cave.

It should emerge from it.

09 — TECHNICAL DOCUMENTATION

Designed From Constraint

Every component of the settlement responds to cave geometry, construction logistics, and long-term habitation requirements.

Elevator

Elevator

Connects surface operations to the protected underground settlement while minimizing excavation and disturbance to the cave.

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Elevator

Master plan

Master plan

Organizes habitation, research, and infrastructure within the natural geometry of the lava tube seperating work (blue) from living (red)

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Master plan

Floor plans

Floor plans

Shows how daily life and programmatic functions are distributed throughout the settlement.

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Floor plans

Circulation

Circulation

Maps movement through the settlement, linking private quarters, shared spaces, and operational facilities.

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Circulation

Habitat sections

Habitat sections

Reveals how the architecture stacks vertically in a tight space.

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Habitat sections

Sleeping tower

Sleeping tower

Illustrates the vertical organization and how the tilt up walls come together to create a habitat.

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Sleeping tower

Living room

Living room

Explores communal living space designed to support crew wellbeing and long-term habitation.

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Living room

Lab inflatable

Lab inflatable

Details the expandable research facility that grows alongside the settlement's scientific operations.

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Lab inflatable

10 — RESEARCH & DEVELOPMENT

Research Through Making

The settlement emerged through an iterative process of research, sketching, model making, and prototyping. These studies explored how architecture could adapt to unknown cave geometries while supporting long-duration human habitation.

Concept Development

Concept Development

Early investigations explored lunar soil strengths, construction strategies, and site exploration

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Concept Development

Structural Exploration

Structural Exploration

Folded paper studies tested how lightweight surfaces could generate complex habitable volumes while responding to irregular cave conditions.

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Structural Exploration

Physical Prototype

Physical Prototype

Physical models were used to evaluate scale, spatial hierarchy, and the relationship between architecture and the surrounding lava tube.

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Physical Prototype

Cave opening render

Constraint-Based Architecture
for Human Exploration

Designed for the unknown.

Mon Bae
Arizona State University
2026