on aerial photo it seems that these tennis courts are removed

Currently not in use due to a landslide. Not clear if and when it will be rebuilt.
https://www.grand-massif.com/telesiege-chariande-2/
http://forum.grand-massif.net/viewtopic.php?f=37&t=3402&sid=86c7a10277a414cc0a5f4b6a9d5fa057&start=20

The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-11-22T15:57:19Z
POI has no name
POI types: amenity-cafe
#organicmaps ios

The place has gone or never existed. A user of Organic Maps application has reported that the POI was visible on the map (see snapshot date below), but was not found on the ground.
OSM snapshot date: 2024-11-22T15:57:19Z
POI name: Au Cœur des Alpages
POI types: building shop-gift
#organicmaps ios

"Speeltuin in aanbouw met water thema en wandelpad"
OSM snapshot date: 2024-09-04T00:27:27Z
POI has no name
POI types: leisure-playground
#organicmaps ios

new top station for the gron chairlift from december 2025. Current lift will be taken down and possibly replaced by a zipline in 2026
https://www.aracheslafrasse.fr/wp-content/uploads/2019/03/presentation-projet-tyrolienne-gron.pdf

"De Brink"
OSM snapshot date: 2024-09-04T00:27:27Z
POI has no name
POI types: landuse-forest
#organicmaps ios

"First two hours free"
OSM snapshot date: 2024-09-04T00:27:27Z
POI name: Poppelpladsen
POI types: fee-yes amenity-parking-fee
#organicmaps ios