Malmstrom AFB · Montana · Upper Missouri LCNHT core
Malmstrom Air Force Base
The Great Falls portage, 18 miles that nearly ended the expedition.
Upper Missouri Breaks · Eagle Creek to Hole in the Wall
Sample 360° capture
Eagle Creek to Hole in the Wall, Upper Missouri Breaks.
A live example of what the Malmstrom Air Force Base corridor would look like after capture, drawn from existing Terrain360 work in the region.
Corridor narrative
Why this corridor.
Malmstrom Air Force Base sits in the geographic heart of the Lewis & Clark Trail, the five-falls portage of the Missouri at Great Falls. The Corps of Discovery spent over a month in June and July 1805 hauling boats and supplies around the falls, in what Lewis called "the grandest sight I ever beheld."
The corridor today threads Black Eagle, Rainbow, Crooked, Horseshoe, and Great falls themselves, joined by the River's Edge Trail, a 57-mile multi-use spine along the Missouri through Great Falls. Upstream, the Smith River permit float and the Upper Missouri River Breaks National Monument (Fort Benton to Coal Banks) extend the LCNHT presence by another 100+ river miles of nationally significant landscape.
Anchored by the Lewis & Clark NHT Interpretive Center, this corridor is the most LCNHT-rich of any installation in the program, and Terrain360 already has captured imagery from the adjacent Upper Missouri River Breaks NM that demonstrates the methodology.
Lewis & Clark connection
Directly on the LCNHT Missouri River corridor. Anchored by the Great Falls portage reach and the Lewis & Clark NHT Interpretive Center in Great Falls.
Directly on the LCNHT Missouri River corridor. Anchored by the Great Falls portage reach and the Lewis & Clark NHT Interpretive Center in Great Falls. Tower Rock, a landmark named by Lewis on July 16, 1805, sits in the corridor as a state park.
Heart of the historic five-falls portage. River's Edge Trail is a marquee multi-use asset along the Missouri.
Final deliverables
What the partnership receives.
Hosted 360° portal
Web-based interactive map showing pan-and-explore imagery of both riverbanks and every mapped trail. Mobile + desktop. Embeddable in any partner site.
Geo-referenced imagery dataset
Equirectangular panoramas + GPS tracks delivered to the installation INRMP team and the NPS Trail Office for reuse in REPI reporting, ESA Section 7, and outreach.
Printable corridor maps
Asset index keyed to the imagery - suitable for visitor information, grant deliverable documentation, and partner co-branding.
L&C interpretive layer (optional)
Waypoint overlay tying the corridor to journal entries and historic sites - Tower Rock, Gates of the Mountains, the Falls portage, the Pacific arrival.
Asset inventory
Every asset, costed.
Each row is a discrete 360-mapping unit. Rivers are priced per mile of both-bank boat capture; trails per mile; access sites as fixed 360 nodes.
| Recreation asset | Type | Miles | LCNHT | Access | Est. cost |
|---|---|---|---|---|---|
| Missouri River — Great Falls reaches (dam to Cascade) 0–25 mi | River | 24 | Direct | Public | $36,000 |
| Missouri River — portage falls corridor (Black Eagle to Morony) 0–18 mi | River | 18 | Direct | Public | $27,000 |
| Sun River — lower reaches to Missouri confluence 0–20 mi | River | 20 | Near | Public | $30,000 |
| Smith River — Camp Baker to Eden Bridge ~60–90 mi SW | River | 59 | Near | Public (lottery permit) | $88,500 |
| Upper Missouri River Breaks — Fort Benton to Coal Banks ~40–90 mi NE | River | 42 | Direct | Public (BLM) | $63,000 |
| River's Edge Trail (Great Falls) In-city | Trail | 57 | Direct | Public | $48,450 |
| Giant Springs State Park loop ~3 mi | Trail | 2 | Direct | Public | $1,700 |
| Sulphur Springs Trail ~5 mi | Trail | 2 | Direct | Public | $1,700 |
| Lewis & Clark NHT Interpretive Center In-city | Access | - | Direct | Public (NPS) | $1,500 |
| Giant Springs State Park (access) ~3 mi | Access | - | Direct | Public | $1,500 |
| Upper Portage Overlook ~5 mi | Access | - | Direct | Public | $1,500 |
| Tower Rock State Park (named by Lewis, 1805) ~30 mi S | Access | - | Direct | Public | $1,500 |
| Pelican Point FAS (Cascade reach boat ramp) ~30 mi S | Access | - | Near | Public | $1,500 |
Corridor map (accent)
Satellite view of the corridor footprint, with rivers, trails, and access sites color-coded. Real corridor traces will land in v2; pins here are placeholder anchors at the installation.
Related Terrain360 work
Where the methodology lives today.
Paddle the Missouri
Terrain360 program platform for the Missouri River system, natural home for the Great Falls capture.
Open ↗
Upper Missouri River Breaks NM (interactive)
Live tour of the Fort Benton to Coal Banks reach.
Open ↗
Lewis & Clark Research
Tribal Nations mapping, companion interpretive layer.
Open ↗