Escher Painted His Path

High up in the mountains
he follows a narrow path

this is uncharted territory
yet he's been here all his life

it's a place where two suns shine
but one soul cries

it's a place full of life
where the birds don't sing

a magical mirage princess
is the projected key out

but he's unaware
that Escher painted his path

is flying high
the answer?