Late 2019, a station named Canberra was planted between Yishun and Sembawang. I said to myself why not set up a cooperative multi-cache with Canberra, Australia. I found GreyHems from Canberra, Australia and together we form this multi-cache.
1. For this part of the cache go to the listed coordinates. You will find a white box with a set of 5 digit number. The sum of this 5 digits is 15.
2. Find a geocacher living in Canberra, Australia. Ask him to find a 5 digit number in "GC8YP2D - REALLY SideTracked - Canberra".
3. Trade this 5 digit number with him or her. In return he will give you 5 digit number. Do not post these numbers on the logs. Logs with these numbers will be deleted.
4. When you received his 5-digit number, let it be ABCDE. The Singapore Canberra cache is located at N01. 2W.XYZ E103 4J.KLM
ABCD - 13 = WXYZ
BCDE + 4579 = JKLM
5. Find and log the cache.
Tip: You may be able to find Canberra cachers by posting a note in GC8YP2D looking for cachers. Similarly Australians may post a note on this cache looking for Singapore cacher to join in the fun to find this cooperative multi-cache!