South Asia · Elevated Stronghold
Sigiriya
Sri Lanka
Sigiriya is strongest on Exposure Control 9/10 — A sheer-sided 180-metre rock with summit-wide views and a small set of stair/gallery approaches makes unexpected walker contact exceptionally difficult.. Its clearest scored constraint is Sustainability 2/10 — The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people..
Overall
5 out of 10Defensibility
8 out of 10Isolation
5 out of 10Sustainability
2 out of 10Ranking context
How this base ranks
Global
#43 of 91 · Top 47.25%
Region · South Asia
#6 of 8 · Top 75%
Base Type · Elevated Stronghold
#6 of 13 · Top 46.15%
Field assessment
At a glance
Bottom Line
For the fixed 20-person Base boundary, the most important endurance constraint is Sustainability 2/10 — The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people..
Biggest Trade-off
The central trade-off is the catalogue's strongest evidenced dimension, Exposure Control at 9/10, against its weakest evidenced dimension, Sustainability at 2/10.
Most Likely Failure
The evaluation leaves this material failure condition unresolved: Historic summit rainwater cisterns exist, but current potable yield, storage condition and treatment for twenty are not established.
Score rationale
Why it scores this way
Defensibility · 8/10
Sheer 180-metre rock faces, constrained engineered stair/gallery approaches and a summit citadel create very strong passive defense. The summit structures are ruins rather than an intact fortress.
Advantages
- Positive credit is limited to what supports the Defensibility score of 8/10; the component rationale is: Sheer 180-metre rock faces, constrained engineered stair/gallery approaches and a summit citadel create very strong passive defense. The summit structures are ruins rather than an intact fortress.
Limitations
- Do not infer additional Defensibility capability outside the fixed Base boundary or beyond the recorded evidence.
Isolation · 5/10
The summit is physically separated above the surrounding plain, but Sigiriya is a major connected heritage destination in an inhabited region rather than a remote wilderness position.
Advantages
- Positive credit is limited to what supports the Isolation score of 5/10; the component rationale is: The summit is physically separated above the surrounding plain, but Sigiriya is a major connected heritage destination in an inhabited region rather than a remote wilderness position.
Limitations
- Do not infer additional Isolation capability outside the fixed Base boundary or beyond the recorded evidence.
Sustainability · 2/10
The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people.
Advantages
- Positive credit is limited to what supports the Sustainability score of 2/10; the component rationale is: The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people.
Limitations
- Do not infer additional Sustainability capability outside the fixed Base boundary or beyond the recorded evidence.
Survival horizons
How survival changes over time
First 7 days: current defence/contact profile
First 7 Days
This horizon does not invent future upgrades or resupply. It carries the current evaluated conditions forward and keeps unknown future capability uncredited.
Positive factors
- The stronger current condition in this horizon is Exposure Control 9/10 — A sheer-sided 180-metre rock with summit-wide views and a small set of stair/gallery approaches makes unexpected walker contact exceptionally difficult..
Risks
- The weaker current condition in this horizon is Defensibility 8/10 — Sheer 180-metre rock faces, constrained engineered stair/gallery approaches and a summit citadel create very strong passive defense. The summit structures are ruins rather than an intact fortress.; no better future state is assumed.
First 100 days: current habitat/capacity profile
First 100 Days
This horizon does not invent future upgrades or resupply. It carries the current evaluated conditions forward and keeps unknown future capability uncredited.
Positive factors
- The stronger current condition in this horizon is Population Capacity 4/10 — The 1.6-hectare summit physically accommodates twenty and provides circulation space, but limited intact shelter and unproven sanitation keep the reference group near practical capacity..
Risks
- The weaker current condition in this horizon is Sustainability 2/10 — The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people.; no better future state is assumed.
Long term: current resource/maintenance profile
Long Term
This horizon does not invent future upgrades or resupply. It carries the current evaluated conditions forward and keeps unknown future capability uncredited.
Positive factors
- The stronger current condition in this horizon is Maintenance Resilience 7/10 — Core defensive value comes from passive rock geometry, stair routes and gravity/rain-based historic hydraulic features with little dependence on machinery; ruined shelter remains a limitation..
Risks
- The weaker current condition in this horizon is Resource Security 2/10 — Rock-cut rainwater cisterns provide protected storage architecture, but current potability, seasonal volume and treatment are not established and no protected summit food production is evidenced.; no better future state is assumed.
Tactical assessment
Practical Reality
Reality Check
Scores apply only to the defined Base and exactly 20 capable adults. Unknown, excluded or external assets are not credited as hidden capability.
Best Use
Within the evaluated boundary, treat Exposure Control as the primary operational strength; do not promote that score into capabilities the evidence does not establish.
Key Risk
Sustainability is the key evidenced long-duration risk: The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people.
Strengths
- One of the strongest scored dimensions is Exposure Control 9/10 — A sheer-sided 180-metre rock with summit-wide views and a small set of stair/gallery approaches makes unexpected walker contact exceptionally difficult..
- One of the strongest scored dimensions is Defensibility 8/10 — Sheer 180-metre rock faces, constrained engineered stair/gallery approaches and a summit citadel create very strong passive defense. The summit structures are ruins rather than an intact fortress..
- One of the strongest scored dimensions is Maintenance Resilience 7/10 — Core defensive value comes from passive rock geometry, stair routes and gravity/rain-based historic hydraulic features with little dependence on machinery; ruined shelter remains a limitation..
Weaknesses
- One of the weakest scored dimensions is Sustainability 2/10 — The summit offers rock-backed shelter remnants and water-storage features but little evidenced weatherproof residential fabric, sanitation or food-preparation capability for twenty people..
- One of the weakest scored dimensions is Resource Security 2/10 — Rock-cut rainwater cisterns provide protected storage architecture, but current potability, seasonal volume and treatment are not established and no protected summit food production is evidenced..
- One of the weakest scored dimensions is Population Capacity 4/10 — The 1.6-hectare summit physically accommodates twenty and provides circulation space, but limited intact shelter and unproven sanitation keep the reference group near practical capacity..
Assumptions / constraints
- Only assets inside the recorded Core Base and immediate operating boundary are credited; excluded surroundings and unproven future access remain outside the score.
Decision context
Rivals / Alternatives
Similar rival
Kumbhalgarh Fort
India · Elevated Stronghold
Kumbhalgarh Fort keeps the same elevated stronghold strategy, with only 0.0 points between the overall scores and closely matched sustainability pressure.
Overall 5/10
Strongest alternative
Amundsen-Scott South Pole Station
Antarctica · Institutional Compound
Amundsen-Scott South Pole Station scores 7.7 overall versus 5.0, adding a stronger sustainability profile while staying relevant as a comparable survival plan.
Overall 7.7/10
Wildcard rival
Okinawa
Japan · Isolated Landmass
Okinawa changes the strategy: it is a isolated landmass with a sustainability edge, while Sigiriya holds more of the defensibility advantage.
Overall 3.7/10