Seneca, Letters to Lucilius
41.3 (tr. Richard M. Gummere):
If ever you have come upon a grove that is full of ancient trees which have grown to an unusual height, shutting out a view of the sky by a veil of pleached and intertwining branches, then the loftiness of the forest, the seclusion of the spot, and your marvel at the thick unbroken shade in the midst of the open spaces, will prove to you the presence of deity.Ivan Shishkin, Forest Reserve, Pine Grove
si tibi occurrerit vetustis arboribus et solitam altitudinem egressis frequens lucus et conspectum caeli densitate ramorum aliorum alios protegentium summovens, illa proceritas silvae et secretum loci et admiratio umbrae in aperto tam densae atque continuae fidem tibi numinis faciet.