Guide to Tao Subterranean House on Orchid Island: Secrets of Ancestral Spaces and Taboos

Structural Analysis of the Tao Subterranean House on Orchid Island

The Tao subterranean house on Orchid Island demonstrates the ultimate wisdom of coexistence between humans and nature. To withstand the fierce typhoons of summer and the strong northeast monsoons of winter, the Tao people chose to “plant” their houses into the earth.

Architectural Features

The main house (Vahay) is usually dug about 1.5 meters down, with the roof almost level with the ground.

• Foundation Design: Built into the ground, integrating the building with the earth to effectively reduce wind exposure.
• Wall Structure: Constructed with local volcanic rocks, offering durability and excellent drainage.
• Roof Materials: Traditionally covered with thatch; nowadays often replaced with black-painted corrugated iron (symbolizing the color of traditional thatch) for better water drainage.
• Exquisite Craftsmanship: The entire building uses no nails, relying on precise mortise and tenon joinery and rattan binding. This flexible structure is safer during earthquakes.

Three-Layer Space Configuration

Walking into a subterranean house, you will find a three-tiered layout, each with specific functions:

1. First Layer (Front Porch/Living Room): Best lighting, used for family gatherings, weaving, organizing fishing gear, and receiving guests.
2. Second Layer (Bedroom/Kitchen): The core of daily life, containing the stove.
3. Innermost Layer (Smoking Room): The darkest and most sacred space, dedicated to smoking flying fish and preserved meat. The smoke not only preserves food but also prevents termites from eating the wooden beams, extending the house’s life.

Functions: Center of Life and Faith

Living and Production Functions

The subterranean house is not just a shelter; it is an efficient production base.

• Warm in Winter, Cool in Summer: Uses geothermal energy to regulate temperature, acting as a natural air conditioner in summer and a warm shelter in winter.
• Food Processing Center: Smoking dried flying fish (Alibangbang) is one of the most important functions of the house.

Spiritual Function: Center of Ancestral Belief

In Tao belief, the house has a spirit. The main house is the sacred place where ancestral spirits reside and the core for family rituals. Every pillar in the house has a name and meaning. The most important “Main Pillar” (Tomok) symbolizes the soul and glory of the family. The number and arrangement of backrest stones outside directly symbolize the social status and ability of the house owner.

Taboos and Regulations: A Must-Read for Tourists

When visiting, you must understand and observe the taboos of the Tao subterranean house on Orchid Island. This is not only polite but also avoids bringing bad luck.

The Miracle of Ivalino Tribe

Located on the east coast of Lanyu, the Ivalino Tribe (Wild Silver) is the best-preserved traditional subterranean house settlement on the island and in Taiwan.

It is hailed as a “living museum” because many elders still live there, maintaining a traditional lifestyle. In comparison, while the Iranmeylek Tribe preserves some buildings, Ivalino is unmatched in scale and integrity. Ivalino’s underground houses are listed as a national cultural asset and are the top choice for tours of the Tao subterranean house on Orchid Island.

For more information on Ivalino, refer to Taitung Tourism’s official guide.

History and Conservation: From Demolition to Rebirth

The preservation of underground houses was not smooth. In 1966, the government forcibly demolished many traditional houses under the guise of “improving life,” replacing them with poorly ventilated concrete housing (sea sand houses) that were unsuited to the climate. This led to the near loss of precious architectural skills.

It wasn’t until the 1990s, with cultural awakening and the structural failure of the first generation of modern housing, that the tribe began to re-evaluate the value of traditional architecture. Today, underground houses are not only tourism resources but also important carriers for the Tao people to reclaim their cultural confidence.

Modern Value and Insights

From a modern architectural perspective, the Tao architectural wisdom is full of insights for sustainable development:

• Green Building Model: Uses local materials (stone, wood, thatch), reducing carbon footprint, and materials are recyclable.
• Climate Adaptation: Designing with nature rather than against it is the best answer to extreme weather.
• Disaster Resilience: In a Pacific island frequent with typhoons, underground houses have proven their resilience over centuries.

Cultural Tour Guide: Deep Experience

How to Book a Visit

To truly understand the underground house, you need a local guide.

• Ivalino Tribe Tours: It is recommended to book directly with local cultural workshops or guesthouses.
• Elder Guides: Many tours are led by elders who actually live in the underground houses, offering firsthand cultural stories.
• Booking Tips: Book 1-2 weeks in advance and confirm if interior visits are included (some are exterior only).

For more tour information, check out Bessy’s Tour Taiwan blog post.

🌞 Outdoor Essential: LISHAN UV Sunscreen Spray

Tours in Ivalino are mostly outdoors, and the sun in Lanyu is intense. This LISHAN UV Sunscreen Spray has SPF50+ protection, a fine mist that doesn’t ruin makeup, and a light fragrance. The large capacity is perfect for full-body use, letting you focus on the tour without getting sunburned.

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Visiting Notices and Cultural Respect

🎒 Cultural Memories: NaSaDen Dachshund Suitcase

Lanyu’s stone paths are a test for suitcase wheels! We recommend this NaSaDen Suitcase with 360-degree smooth silent wheels, making it easy to push even on rough roads. The cute dachshund design accompanies you as you explore the mystery of underground houses.

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