As the tibial nerve travels down the popliteal fossa, and before it goes beneath the gastrocnemius, it gives off a cutaneous branch which is the medial sural cutaneous nerve. This nerve courses laterally over the lateral head of the gastrocnemius.
The daytime journey from Barcelona to Granada by train is very easy. The route we recommend is less than 8 hrs long, not bad for a journey of almost 1200 km. The best option is the once-a-day connection via Antequera-Santa Ana.
There are various options for your train journey from Barcelona to Granada, with daytime routings via Valencia and Madrid, usually with one change of train along the way. The night train from Barcelona to Granada is presently suspended.