Elevations of all geocaches will be updated the coming two weeks. The service provider we use has made major improvements and we therefore chose to update all our data.

Primarily they have new sources which much better accuracy, but there is also some improvements in math for interpolations. The countries that will be improved the most are:
* Denmark
* Finland
* France
* Germany
* Hong Kong
* Mexico
* Norway
* United Kingdom
* New Zealand
* United States
* Spain
* Iceland

Due to API limits in the subscription plan we have (which we had to upgrade temporarily) the whole update process will take ~2 weeks. ~8M geocaches, ~0.5M updates per day.

well, what a nice surpise. My lowest elevation cache was this one in Portugal, https://coord.info/GCRE96 -59 meters (BadgeGen sapphire, 1 meter short of Emerald. Dang. I just looked a few moments ago and it now says -60 meters, Emerald! Whoop.