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ff5722

Mapper since:
December 11, 2015
Last map edit:
July 27, 2025

osm.wiki/User:Ff5722

http://hdyc.neis-one.org/?ff5722

Main mapping areas of interest

  • Southeast Gansu (Lanzhou, Tianshui, Dingxi, Pingliang, Qingyang, Longnan)
  • New expressways and major roads in China
  • Updating areas using Sentinel-2 (osm.wiki/Sentinel-2)

Latest Diaries

Diary Entry 2018 Laos dam collapse imagery

The Sentinel-2 satellite finally captured a cloud free coverage of the 2018 Laos Dam Collapse site. Over a distance of more than 50km, everything n...

Comments 0 comments Date November 06, 2018

Diary Entry 2017 Sichuan landslide aftermath

On 24 June 2017, a big landslide occured in China’s Sichuan province, burying dozens of villagers alive. Although pictures from the ground clearly ...

Comments 1 comment Date October 06, 2017

Diary Entry A hospital on every street corner in South Korea?

I’m tempted to replace all those named as clinic by the tag amenity=clinic, but maybe someone who has lived in Korea can confirm if that’s appropri...

Comments 3 comments Date September 21, 2017

Diary Entry Does anyone even check what HOTOSM contributors leave behind?

To name a few things in the above area: residential roads tagged as motorways, primary or secondary the same road went from mo...

Comments 13 comments Date September 04, 2017