Ingress portal disappeared
Portals can be removed by Niantic if they are reported by some players. Some possible causes:
- It doesn't exist
- It doesn't meet the criteria, which can be read more on this page
- It is dangerous, inaccessible or on private property
The have probably been reported as invalid portals by other agents. These reports must have been made between a few weeks and a few months ago because it usually takes so long for an invalid portal report to be accepted.