Christiaan Wilson

Name: Thomas Wierks & Si Sung

Nationality: Dutch/Korean

Gender: Male/Male

Age: 27/42

Height: ?

Build: ?

Region of Trekking: Langtang (Tamang Heritage Trail)

Date Last Seen: 25th February, 2019

Location Last Seen: Thuman Village


Missing – Found Deceased

Map showing the area that the person went missing

Due to the nature of maps the exact “pin” position in relation to the missing persons last known location cannot be guaranteed. For any form of exact GPS coordinates contact the search party.

Further information on missing trekkers was notified by local Nepali about two trekkers who went missing in the Langtang ares on September 22nd. has endeavoured to gain more information about the missing trekkers but have run into nothing but obstacles in Nepal. 

Not even full names are being released despite them being available to both TAAN and Nepal Tourism Board. Similarly photographs of the trekkers are not being released despite a full scale Nepali search for the trekkers. 

Having photographs and physical descriptions along with full names of missing trekkers is essential to both raising awareness that they have gone missing. Identifying them and helping in the search.

While we usually don’t publish missing trekker posts without facts local media has continued to provide search updates. As such we are releasing this information as is.

The two trekkers were last seen at Thuman Village on September 22nd 2019. Search teams were hampered by heavy rains. The last known search was on October 2nd.

Update: It’s being reported by Dutch Media that Thomas was discovered deceased at the foot of a cliff in the area. It is presumed he and his trekking partner got lost. 

Si Sung’s body was found on October 12th in what is reported to be a populated area. 

It is also reported that the organisation both trekkers worked for does not want the full details of their deaths made public hence the lack of information.

Our thanks to the reader who brought this information to us.

Those with any information or sightings of Vincent should contact the following:

  • Nepal Tourist Police +977-1-422-6359
  • Nepal Tourism Board +977-1-425-6909


Other sources of information and photographs of the missing trekker

Missing Trekker