
Open ledger · AOD.US.SUN-VALLEY.V00 · ORIGINALClose ledger · AOD.US.SUN-VALLEY.V00
Ledger AOD.US.SUN-VALLEY.V00
The chairlift at Ruud - Proctor Mountain in Sun Valley, Idaho USA
Proctor Mountain Ski Lift. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Proctor Mountain Ski Lift
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · CC BY-SA 4.0
BEFORE MODERN SPORT
Sun Valley
How settlement, access and winter sport shaped Sun Valley.
Scroll to read the contour through time
Sun Valley is a resort town and alpine ski resort in the western United States, in Blaine County, Idaho, adjacent to the city of Ketchum in the Wood River valley.
Sources for this chapter
1936
Work and settlement beneath the snowline
Publicist Steve Hannagan named the resort "Sun Valley" and developed the tag line: "Winter sports under a summer sun".
(Count Schaffgotsch returned to Austria and was killed on the Eastern Front during World War II.) The centerpiece of the new resort was the Sun Valley Lodge, which opened on December 21, 1936.
Sources for this chapter
1935
A route reaches Sun Valley
Union Pacific selected the Wood River valley for a destination resort in 1935.
Rail promotion and the new chairlift system made repeated winter visits part of the design.


Open ledger · AOD.US.SUN-VALLEY.V01 · ORIGINALClose ledger · AOD.US.SUN-VALLEY.V01
Ledger AOD.US.SUN-VALLEY.V01
Bald-Mountain-Sun-Valley-Rd
Sun Valley's Bald Mountain ski area as seen from Sun Valley Road in Ketchum, Idaho. Photo by Stephen Marks 09/2007. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Sun Valley's Bald Mountain ski area as seen from Sun Valley Road in Ketchum, Idaho. Photo by Stephen Marks 09/2007
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · Public domain
1935
Winter becomes organised
Sun Valley began as a Union Pacific destination resort project in 1935 and installed the first modern chairlifts in 1936.
THE LIVING MAP
The mapped place
Sun Valley is recorded at 43.696° N, 114.348° W. Its catalogue reference reaches 2,788 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.SUN-VALLEY.V00 · ORIGINALClose ledger · AOD.US.SUN-VALLEY.V00
Ledger AOD.US.SUN-VALLEY.V00
The chairlift at Ruud - Proctor Mountain in Sun Valley, Idaho USA
Proctor Mountain Ski Lift. This photograph is used as a geographic witness to the place, not as evidence of the historical date shown in the chapter.
- Visual description
- Proctor Mountain Ski Lift
- Nature
- original
- Medium
- Open-licence photograph
- Source
- Wikimedia Commons · CC BY-SA 4.0
TODAY
Sun Valley now
Sun Valley remains a resort town built around Bald Mountain, Dollar Mountain and the relationship between skiing, hospitality and the wider Wood River valley.
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
The chairlift at Ruud - Proctor Mountain in Sun Valley, Idaho USA
AOD.US.SUN-VALLEY.V00 · original · Wikimedia Commons · CC BY-SA 4.0
Bald-Mountain-Sun-Valley-Rd
AOD.US.SUN-VALLEY.V01 · original · Wikimedia Commons · Public domain
Editorial record
Full US Beta edition. Place evidence is adapted from the linked Sun Valley, Idaho overview under CC BY-SA 4.0 and remains subject to named historical and local review. Cartography is generated from the PeakWave location catalogue.