
Open ledger · AOD.US.KEYSTONE.V00 · ORIGINALClose ledger · AOD.US.KEYSTONE.V00
Ledger AOD.US.KEYSTONE.V00
Keystone Lake and Resort
Keystone Resort with Lake. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Keystone Resort with Lake
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · CC BY-SA 3.0
BEFORE MODERN SPORT
Keystone
How settlement, access and winter sport shaped Keystone.
Scroll to read the contour through time
Keystone is a home rule town located in Summit County, Colorado, United States.
Sources for this chapter
BEFORE TOURISM
Before the resort map
The linked local overview does not preserve a clear account of Keystone before modern tourism.
This edition leaves that part of the timeline open rather than mistaking the first surviving sporting reference for the beginning of the place.
Sources for this chapter
ACCESS CHANGES
A route reaches Keystone
The surviving overview does not identify one decisive access date for Keystone.
This edition therefore leaves that date open rather than turning gradual change into a false single event.


Open ledger · AOD.US.KEYSTONE.V01 · ORIGINALClose ledger · AOD.US.KEYSTONE.V01
Ledger AOD.US.KEYSTONE.V01
Airforce skiing at keystone colorado
Airforce skiing at keystone colorado. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Airforce skiing at keystone colorado
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · Public domain
1970
Winter becomes organised
Keystone opened for skiing in 1970 and grew across three mountains: Dercum Mountain, North Peak and the Outback.
THE LIVING MAP
The mapped place
Keystone is recorded at 39.597° N, 105.943° W. Its catalogue reference reaches 3,652 metres. A modern resort map compresses terrain, exposure and access into a diagram. This exhibition keeps the underlying contour visible so the place does not become only a list of facilities.
Sources for this chapter

Open ledger · AOD.US.KEYSTONE.V00 · ORIGINALClose ledger · AOD.US.KEYSTONE.V00
Ledger AOD.US.KEYSTONE.V00
Keystone Lake and Resort
Keystone Resort with Lake. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Keystone Resort with Lake
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · CC BY-SA 3.0
TODAY
Keystone now
Keystone is now a purpose-built mountain village and ski area whose year-round economy depends on access from Colorado’s Front Range.
THE LEDGER
Sources and credits
This exhibition is built from local, institutional and sporting records. The source ledger keeps the claims visible and leaves space for correction as further local evidence emerges.
Sources for this chapter
Artefacts in order of appearance
Keystone Lake and Resort
AOD.US.KEYSTONE.V00 · original · Wikimedia Commons · CC BY-SA 3.0
Airforce skiing at keystone colorado
AOD.US.KEYSTONE.V01 · original · Wikimedia Commons · Public domain
Editorial record
Full US Beta edition. Place evidence is adapted from the linked Keystone, Colorado overview under CC BY-SA 4.0 and remains subject to named historical and local review. Cartography is generated from the PeakWave location catalogue.