End of the road

When we went down from the mountain, my son found a small ridge line and said to want to walk on the ridge line. I could a red mark on branches on the ridge line. So, I decided to agree with him.
I knew the deep cliff over there. So, I afraid to slip down to the valley.
The road changed to narrow after we walked for a while. And, we lost the red mark around there. And, the down slope changed to hard. So, I decided to return to normal road. He wanted to go to front. But, I thought my decide was correct.