Translation of vergreisen

One of my favorite seasons is the winter, the time in which everything is white and bright. But even though I like this time of the year a part of me detests it because of it may drawbacks.
We had time to walk around the waterfall but refrained from entering the little lake at the bottom. My fellow tourtakers were quiet nice and we spend a while just sitting in the grass near the water.
Thanks for the tip: We will add a lesson on colours! About the topical lessons around the home: Do you have specific words that you think should be added? It will take a while until we upload the new version.