"May is nature conservation month," the president wrote on her social media account Thursday evening.

"This time, I visited Lääne-Viru County today, where I got to the restored salt marshes and the newly completed Tudu nature study trail, and visited flying squirrels' habitat," she went on.

Negotiating parts of the bog, which lies near the county border with Ida-Viru County, required donning special bog shoes (see picture), against sinking into the quagmire.

"There is a lot to discover in Estonian nature, and this month's nature conservation month invites us all to take notice of the biodiversity that surrounds us and to help preserve it. I found out so much today. Happy searching, and joy of discovery for you too!"

The Tudu peat bog was exploited on a near-industrial scale during the Soviet era, but since then peat-cutting has largely ended and the bogs – dried out during the Soviet era – have been undergoing restoration, a move which even has an impact on greenhouse gas emissions (since the denuded bogs became net CO2 emitters rather than absorbers).

Download the ERR News app for Android and iOS now and never miss an update!