Start with Updates. Select a report for its summary and unknowns; choose Full evidence for claims, sources, and revisions.
- Updates are newest first.
- Selecting one replaces the Updates list while keeping the map visible.
- On phones, Back to updates restores the list.
Dates and evidence
Published or Reported is the source timestamp, not necessarily the event time. Occurred appears only when a source states it. Times use Nepal time (UTC+05:45). Open a source to see what it supports and what remains unverified; several reports may still repeat one account.
Map controls and limits
The reconstruction is site context, not an event-location map. Selecting an update does not place the incident in a tunnel; the branch and exact locations remain unverified.
Left-drag to rotate, turn on Axis to lock every rotation drag to its first horizontal or vertical direction, or hold Alt/Option for a single locked drag. Right-drag to pan and scroll to zoom toward the pointer. With a viewport focused, arrow keys pan and plus or minus zoom. Press M to open measurement tools under the cursor, D for Distance, B for Bearing, A for Area, N for a personal Note, or E to edit the selected measurement. Use Map key & routes to inspect a feature.
Choose Pan or Rotate, then drag. In Rotate mode, turn on Axis to lock each drag to horizontal orbit or vertical tilt. Pinch to zoom; use Reset for the overview. Marker text appears as you zoom closer.
Map items independently shows or hides system labels, measurements, annotations, event areas, and photos without deleting them.
Export view downloads the current or chosen split viewport at 4K or 8K as PNG or PDF and follows the current Map items visibility. PDF keeps visible labels and readings selectable; both formats preserve on-screen label budgeting and omit edit handles and dense endpoint-coordinate cards. Higher output resolution does not improve source imagery or fill measured NoData.
Distance reports the measured width. Bearing reports drawing bearing and an approximate true bearing derived from the provisional map registration; it is not a surveyed azimuth. Area traces a projected polygon while you drag and reports area and perimeter; it does not estimate surface area or volume.
Tunnel profile (P) saves checkpoints along one tunnel with recorded sections. Place them in Top view or enter chainage and offset, then choose Finish path. The linked chart and cross-section show floor, ceiling and local vertical gap with their evidence basis. Redraw path supports Apply, Cancel and Undo. Save route sheet exports a PNG; JSON export includes the path and its geometry revision. Modelled dimensions do not establish current free space.
User-drawn measurements are saved only in this browser and shown in Current, Top, Front, and Side. Completed geometry is locked: selecting a line, polygon, or badge cannot move it. Choose Edit points before moving a linear endpoint, or Redraw area for a polygon; changes remain temporary until Apply and Cancel restores the original. Details stores the record ID, Draft or Reviewed state, observation time, operator, method, instrument, uncertainty, reviewer, timestamps, and revision history. Any geometry change resets a Reviewed record to Draft. Delete and Clear all ask for confirmation and offer an immediate Undo. Export JSON warns before downloading exact coordinates, provenance, and revisions; browser storage is not encrypted. Import JSON validates and adds measurements without replacing current work. Evidence-controlled measurements remain read-only in every viewport. On mobile, endpoint coordinates stay in the selected-measurement panel rather than covering the map.
Photos and personal notes
Update photos open published images linked to the log. An area only marker means the source did not establish an exact camera or event location. Photo locations is historical station context, not incident-time evidence.
Annotate saves personal map notes in this browser only; they are not part of the published record.
Alt + ← / → Previous / nextEsc Close dialog
Illustrative map only. Not for rescue, access, engineering, or forensic decisions. Geometry and incident locations are unverified.
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