diff --git a/pages/concepts.map.md b/pages/concepts.map.md
index 4bacbc4..3674242 100644
--- a/pages/concepts.map.md
+++ b/pages/concepts.map.md
@@ -91,7 +91,9 @@
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+## Interesting online maps and map projection interpretations
 - https://geodienst.github.io/lighthousemap/
+- https://mapfight.xyz
 
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