What are those lines, on your face?

Words from a distance
carried to my ears:
A child asking an old man,
"what are those lines, on your face?"
Old man answered,
"That dear child
is the map of journeys
that I have undertaken".
The child curious, asked again,
"But why do they all criss and cross?"
Old man said with a smile in his voice,
"Oh, every road that I took
crossed every road that I took".
The child replied all knowingly,
"yes, like school to home
and home to the park,
and to the Vidhya's house".