SOTLAS (SOTA Atlas) – New summit map

Dear SOTA fans,

The vector-based summit map that I published on my personal website a few months ago (see thread SMP patching - #14 by HB9DQM) has become quite popular. Inspired by the feedback, I have been working on an enhanced version, extending it with many features to quickly and easily discover information about summits and activators from the database.

The result, which I call SOTLAS (for SOTA Atlas), is now in a state where it can be unleashed on the general public. So, without further ado, here it is:


A reasonably modern browser and device are required. Some screenshots are at the end of this post in case you cannot (yet) access the site for some reason. It is a Single-page application (SPA) built with modern web technologies, meaning that most of the application code is loaded and cached in the browser the first time you load the site. This may take a moment, but once loaded, switching between pages should be pretty fast.

The map tiles are hosted on my server in Switzerland, so users outside Europe may experience some delays in loading the map. If anybody has a server on another continent with 300 GB of SSD to spare, please let me know :wink:

Feature highlights:

  • Worldwide summit map based on vector tiles (OSM data), with filter options (number of activations, activated by etc.) and display of recents spots
  • Summit browser with information from the SOTA database (including articles/links) and Wikipedia
  • Search for summit names, references or callsigns in the navigation bar
    (try entering only part of a callsign or a summit name, or leaving out umlauts etc.)
  • Live view of SOTAwatch spots without having to refresh, with filter options by band, mode and continent
  • Live view of RBN spots from registered SOTA activator callsigns, or from ongoing spotted/alerted SOTA activations
  • Alert list
  • Activator details with last spots, statistics and a list of all activations
  • Responsive design for mobile devices

I hope that this new resource will prove useful, and intend to extend it with more features in the future. Feedbacks and bug reports are welcome, either here or via email to

vy 73,

Manuel HB9DQM


Going through it now … very nice. Many thanks for the head’s up!

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Excellent tool for trip planning. Map view loads super fast.
Thanks for sharing!
73 Heinz, OE5EEP

(1) It works on an Android mobile without any limitations when compared to a PC
(2) I like the statistics!

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Dear Manuel,

wow this is SOTAstic / fantastic :slight_smile: !!!
Many tnx for your excellent work.

Vy73 de Fritz HB9CSA, DL4FDM


All I can say is “Wow!” What a great resource! Thanks for all the work that went into developing and maintaining it!

Dave, AE9Q

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just perfect … thanks a lot!

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I’ve only just started looking but I’m very impressed so far.

I like how I can bookmark on my browser a zoomed-in view of my local summits and they are nicely colour-coded by summit points and clickable for more info.

Thanks for your hard work.
73, Andy

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Wow! Awesome!
Many thanks.
73’s de Fabio IK2LEY

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Hello Manuel
Thanks a lot for share. It is a really nice job.
Best 73
André f5ukl

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Thank a lot Manuel for this great tool. The previous version was working fine using Chrome on my Android phone. The new version does not show any map. The summit markers and the rest of the interface is there. Any idea?

Strange is that in a new inkognito tab it works fine.

73 joe

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Hello Joe, your browser may have cached some map tiles from the old page, which uses the same map server, but with a different CORS header setting. Try clearing the cache in Chrome on your phone (see Clear cache & cookies - Android - Google Account Help).

73, Manuel

I did clear the browser cache before but cookies were also needed to be cleared.
Now it works! Thanks!

73, Joe

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Perfect! And thanks a lot!!!

73, Takeo

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Oh, I forgot to mention a little hidden feature for those who are accustomed to imperial units: simply click one of the altitude labels, and the units will switch from meters to feet (or back) on the whole site, and this setting will be remembered in the browser.


I love it.
Thanks from Gerald F6HBI

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This looks great :slight_smile: I like the statistics pages too, excellent work.

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I cannot decide if I’m more amazed by your climbing skills or by your web programming abilities. You are making truly great contributions to the SOTA movement in the both areas. Congratulations, Manuel!


It’s another big thumbs up from me. What a great app! Together with SOTAMaps we are very fortunate to have two very useful resources in the SOTA community.

Thanks Manuel for all your efforts in creating this.

73 Andrew G4AFI

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Great! Thank you!

73, Alfred, OE5AKM

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Many thanks for giving me a simple but comprehensive map system for my phone. I struggled with the SOTA3 SOTA maps and was swapping about to Toppo and Street maps to get something I could use in planning when no computer was available. Now, Problem Solved. I am grateful.

Still learning about the other capabilities.


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