Gettings dear friend.
In this national zoo of our country Bangladesh, they have made a very big place. Nice to know that you went there in 2018 and went on a three hour tour. I also went in 2016 and that was the last time. To tell the truth, I didn't have a big mobile but a buttonThere was a phone. There was no option to actually take pictures with it. But I still have those times in my memory. I didn't see the time but it took a long time to see all the animals. But knowing the extent of the place from you and the three hours it took to travel I can get some idea.

Many thanks for presenting us a nice post. Be well and be healthy. Best wishes to you.