The ground is talking. Lodeline lets you hear it.

Lodeline is a field mapping and terrain-analysis app built for gold prospectors.

Snap a geotagged photo of a creek, bench, gulch, or hillside and Lodeline pulls public 3DEP elevation data for that location, analyzes the surrounding terrain, and gives you a Paystreak Score — a 0–100 terrain favorability rating with a clear explanation of the features behind it.

PHOTO → TERRAIN → PAYSTREAK SCORE

See the ground differently.

Lodeline uses LiDAR and elevation data to reveal terrain that can be difficult to recognize beneath trees and vegetation — including old channels, benches, drainage patterns, slope breaks, and other terrain features useful when researching prospecting ground.

The Paystreak Score doesn't tell you where gold is. It helps you evaluate whether the terrain deserves a closer look and shows you the factors that influenced the score.

AI GEOLOGIST — LODELINE+

Drop a pin anywhere and request an AI-powered field briefing for that location.

The AI Geologist can:

• Identify nearby documented historical mines from public USGS records
• Show distance and direction to nearby historical mineral locations
• Explain mapped geology and host rock
• Analyze drainages, benches, slopes, and surrounding terrain
• Answer follow-up questions about the location

It combines Lodeline's terrain analysis with public geological and historical data to help you research a location before heading into the field.

CORE FIELD TOOLS

• Photo-to-terrain analysis
• 0–100 Paystreak terrain favorability score
• LiDAR and elevation terrain visualization
• Topographic contours
• Roads and public-land layers
• PLSS grid
• GPS waypoints
• Trip organization
• GPS track recording
• Prospecting dig log
• UTM and MGRS coordinates
• Field-focused dark map interface

LODELINE PRO

For prospectors who want the complete field mapping toolkit:

• Historical Mines — view documented public mineral records on the map
• BLM Claims Lookup — open official BLM MLRS land records for an area
• Offline Packs — download terrain and mapping data for use beyond cell coverage
• Transect — draw an elevation profile across a creek, drainage, bench, or hillside
• Unlimited waypoints and photos

LODELINE+

Lodeline+ adds server-powered AI tools including the AI Geologist and AI Trip Planner.

Lodeline Pro and Lodeline+ are optional upgrades. The core Lodeline terrain and field-mapping experience remains available without AI.

BUILT FOR PROSPECTING — NOT PROMISES

Lodeline does not detect gold and does not predict whether gold is present at a location.

Instead, it analyzes terrain favorability using public elevation, geological, hydrographic, land, and historical mineral data and shows you the evidence behind its analysis.

Historical mine records describe documented historical activity and do not indicate current mining claims, access rights, or permission to prospect.

Always verify current land ownership, land status, mining claims, regulations, and access requirements with the appropriate authorities before entering or prospecting an area.

GOVERNMENT DATA & INDEPENDENCE NOTICE

Lodeline is an independent commercial application. It is not affiliated with, endorsed by, or an official representative of the U.S. Geological Survey (USGS), Bureau of Land Management (BLM), USDA Forest Service, or any other government agency.

Public data sources used by Lodeline include:

USGS 3D Elevation Program:
https://www.usgs.gov/3d-elevation-program

USGS Mineral Resources Data System:
https://mrdata.usgs.gov/mrds/

USGS National Hydrography:
https://www.usgs.gov/national-hydrography

BLM Mineral & Land Records System:
https://mlrs.blm.gov

Bureau of Land Management:
https://www.blm.gov

USDA Forest Service:
https://www.fs.usda.gov

Privacy Policy:
https://lodeline.app/privacy.html

Terms of Use:
https://lodeline.app/terms.html

Gold country, decoded.