1. A path, course, or method that is unclear, hidden, or not easily understood; a roundabout or indirect way
He took a rota obscura to avoid the main roads.
Ele seguiu uma rota obscura para evitar as estradas principais.
2. Figuratively, an unclear or indirect method of achieving something; a hidden or secretive approach
The company used rota obscura to hide their financial irregularities.
A empresa usou rota obscura para ocultar suas irregularidades financeiras.