# Tree-fall direction catalogue and map (Fast's 1960s surveys, unified by Longo et al. 2005)

> The key dataset for the epicentre, trajectory and energy, and the one most worth digitising. The columns are the expected structure, not confirmed: no…

Source: https://mysteriesdept.com/datasets/DAT0D4ECQEY4AFT/tree-fall-direction-catalogue-and-map-fasts-1960s-surveys  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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 Dataset · spatial

# Tree-fall direction catalogue and map (Fast's 1960s surveys, unified by Longo et al. 2005)

The key dataset for the epicentre, trajectory and energy, and the one most worth digitising. The columns are the expected structure, not confirmed: no machine-readable copy was found online. Fast's original (1967) and the 2005 proceedings are in print. Supports vector-field fitting of airburst models (energy, height, inclination, azimuth).

![1908 Tunguska event](https://mysteriesdept.com/media/folio/tunguska-event-lead)**1908 Tunguska event** Version **1.0** Licence **unknown** Updated **26 Oct 2026**

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[Get it from ui.adsabs.harvard.edu](https://ui.adsabs.harvard.edu/abs/2005ach..book..222L/abstract)

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