This map contains house thermals, optimal glide lines and potential landing areas for a light wind, thermic day.  The optimal glide lines are designed for sailplane pilots, but are still useful for hang gliders and paragliders. Field landing sites are as useful for hang-gliders as sailplane pilots and all house thermals are useful for all thermalling aircraft. The majority of the information is based on Werner and Simon's long experience, augmented by locals and after a protracted process was worked up and published. All altitudes are AMSL. Airspace is deliberately omitted and this information should be obtained from current aircharts (e.g. ICAO)


This map aims to assist in getting a bigger picture, seeing connections, recognising sensitive areas and therefore being able to understand meteorology in the Alps. They should further help with reading terrain. They are primarily for flight planning in the eastern Alps. The marked house thermals are those which have been identified in-flight. 



  • Known house thermals: the marked house thermals are recognised hotspots , which, depending on the time of day, generally provide lift.

    Airfields’ radio frequencies, including military and civil frequencies

  • Field landing areas - good

  • Field landing areas - doable

  • Field landing areas - emergency only

  • Good possibilities for crossing main ridges

  • Good glide lines - often with good transition possibilities

  • Prominent mountains/thermals, including names and altitudes

  • Important mountain passes incl. altitude
    QR codes linking to important info pages
    Additional good glide lines in different areas



In January 2020 we released the new edition of our thermal maps including revisions of the following areas:

• We updated all airfields and radio frequencies

• All airfields are now marked with a 10km radius

• We revised and expanded the area west of the Arlberg and Flüela pass

• We added a list of airfields with their respective altitudes and runways lengths

• We added an overview of all radio frequencies of the Flight Information Services including phone numbers

• We added a list of all Austrian airports including their contact information

• We added a list of all Austrian military airfields including their contact information

• We added and revised a number of details such as emergency signals in case of radio loss






  • in clear plastic sleeve and cardboard envelope or rolled in a solid mailing tube