Rollins Pass route over the Continental Divide
E488668
The Rollins Pass route over the Continental Divide was a high-altitude, winding railroad line in Colorado known for its challenging grades, severe weather, and historic engineering feats before being superseded by the Moffat Tunnel.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Rollins Pass route | 1 |
| Rollins Pass route over the Continental Divide canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5036847 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Rollins Pass route over the Continental Divide Context triple: [Moffat Tunnel route, replaced, Rollins Pass route over the Continental Divide]
-
A.
Independence Pass
Independence Pass is a high mountain pass in central Colorado known for its scenic alpine views and its role as a key crossing of the Continental Divide.
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B.
Loveland Pass on U.S. Route 6
Loveland Pass on U.S. Route 6 is a high-elevation mountain pass in the Colorado Rockies known for its steep, winding road and scenic but often hazardous alternative route to the Interstate 70 tunnel.
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C.
Top of the Rockies Scenic Byway
Top of the Rockies Scenic Byway is a high-altitude scenic driving route in Colorado known for its dramatic Rocky Mountain vistas, historic mining towns, and access to some of the state’s tallest peaks.
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D.
Forester Pass
Forester Pass is a high mountain pass in the Sierra Nevada of California, renowned as the loftiest point along the Pacific Crest Trail and a challenging milestone for long-distance hikers.
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E.
Continental Divide National Scenic Trail
The Continental Divide National Scenic Trail is a long-distance hiking route that follows the Rocky Mountains along the Continental Divide from Mexico to Canada, offering remote wilderness experiences across multiple U.S. states.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Rollins Pass route over the Continental Divide Target entity description: The Rollins Pass route over the Continental Divide was a high-altitude, winding railroad line in Colorado known for its challenging grades, severe weather, and historic engineering feats before being superseded by the Moffat Tunnel.
-
A.
Independence Pass
Independence Pass is a high mountain pass in central Colorado known for its scenic alpine views and its role as a key crossing of the Continental Divide.
-
B.
Loveland Pass on U.S. Route 6
Loveland Pass on U.S. Route 6 is a high-elevation mountain pass in the Colorado Rockies known for its steep, winding road and scenic but often hazardous alternative route to the Interstate 70 tunnel.
-
C.
Top of the Rockies Scenic Byway
Top of the Rockies Scenic Byway is a high-altitude scenic driving route in Colorado known for its dramatic Rocky Mountain vistas, historic mining towns, and access to some of the state’s tallest peaks.
-
D.
Forester Pass
Forester Pass is a high mountain pass in the Sierra Nevada of California, renowned as the loftiest point along the Pacific Crest Trail and a challenging milestone for long-distance hikers.
-
E.
Continental Divide National Scenic Trail
The Continental Divide National Scenic Trail is a long-distance hiking route that follows the Rocky Mountains along the Continental Divide from Mexico to Canada, offering remote wilderness experiences across multiple U.S. states.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
mountain pass railroad route
ⓘ
railroad line ⓘ |
| climate | alpine ⓘ |
| constructionChallenge |
harsh mountain environment
ⓘ
unstable snow and rock conditions ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| crosses |
Continental Divide of the Americas
ⓘ
linked to:
Continental Divide
|
| difficulty | operationally challenging ⓘ |
| elevation | over 11,000 feet above sea level ⓘ |
| engineeringSignificance | example of high-mountain railroad construction in the United States ⓘ |
| gauge | standard gauge ⓘ |
| hasFeature |
exposed summit alignment
ⓘ
sharp curves ⓘ steep grades ⓘ |
| hasStructure |
loops and switchbacks
ⓘ
snow sheds ⓘ trestles ⓘ |
| heritageStatus | historic railroad route ⓘ |
| historicalPeriod | early 20th century railroad era ⓘ |
| knownFor |
challenging grades
ⓘ
high altitude ⓘ historic engineering feats ⓘ severe winter weather ⓘ winding alignment ⓘ |
| locatedIn | Colorado ⓘ |
| namedAfter | Rollins Pass ⓘ |
| operationalIssue |
frequent closures due to snow
ⓘ
slow speeds due to curvature and grade ⓘ |
| partOf |
Denver and Rio Grande Western Railroad system
ⓘ
linked to:
Denver and Rio Grande Western Railroad
Denver and Salt Lake Railway main line ⓘ
linked to:
Union Pacific Moffat Subdivision
|
| passesThrough |
Boulder County, Colorado
ⓘ
linked to:
Boulder County
Gilpin County, Colorado ⓘ Grand County, Colorado ⓘ |
| purpose | to provide a rail crossing of the Continental Divide before construction of the Moffat Tunnel ⓘ |
| replacedBy | Moffat Tunnel route ⓘ |
| state | Colorado ⓘ |
| subjectTo |
avalanches
ⓘ
heavy snowfall ⓘ high winds ⓘ |
| supersededBy | lower-elevation tunnel route under the Continental Divide ⓘ |
| terrain | Rocky Mountains ⓘ |
| transportMode | rail ⓘ |
| usedBy |
freight trains
ⓘ
passenger trains ⓘ |
| usedFor | transcontinental rail traffic between eastern Colorado and western Colorado ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Rollins Pass route over the Continental Divide Description of subject: The Rollins Pass route over the Continental Divide was a high-altitude, winding railroad line in Colorado known for its challenging grades, severe weather, and historic engineering feats before being superseded by the Moffat Tunnel.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Rollins Pass route over the Continental Divide