This grotto is the meadow I referred to in my post regarding the Polar Bear grottos. One of the Polar Bears has access to this meadow. The Grizzly sisters, have a grotto with decent vegetation landscaping adjacent to the Gulch exhibit. The remaining three cement grottos should and could look like the Grizzly's grotto.
This is a newer Grotto about 2005ish as stated above. After the Grizzly's new exhibit was built in 07 i think, they moved to the end and have both the last Grotto (with vegetation) and the new Gulch (completely landscaped). That shook up the situation to its current state which is Grotto A- all cement for the Andean Bear, B- Cement for Polar 1, C- Grass filled Grotto (Polar rotation), and D-Cement for Polar 2. Polar 2 rarely see's grass, and the Andean Bear is the true victim, having not felt grass for over three years.