  The aging dynamics of a simple model glass is numerically investigated
observing how it takes place in the potential energy landscape $V$.
Partitioning the landscape in basins of minima of $|\nabla V|^2$, we are able
to elucidate some interesting topological properties of the aging process. The
main result is the characterization of the long time behavior as a jump
dynamics between basins of attraction of minima. Moreover we extract some
information about the landscape itself, determining quantitatively few
parameters describing it, such as the mean energy barrier value and the mean
square distance between adjacent minima.
