Start at the Castle Tavern and walk south up the hill for approximately 4km, turn left (100m) and then left again. Walk north down a wooded road, passing St.Brendan's Holy Well, to arrive back at the Castle Tavern.

In the medieval period, the Ballyhooly road to Cork went via Gurteen - Ballymacphilip and Rathcormac (18.1). This was considered too great a distance and the Castleblagh road was constructed , probably in the early 1700's, to cater for the early expansion of trade.

However, as the trade in Cork city grew, due to its role as an Atlantic city of the British Empire, some routes became unsuitable.

These were principally hill routes where the large horse drawn loads experienced difficulties.

These problems would very likely have been felt on the steep rising Castleblagh road. The only solution therefore was to build another road through the valley of the stream, which forms the boundary between Gortroche and Castleblagh town-lands.

This road would have been of little benefit to the local landowners. However, it would have been of major advantage to the Co. Limerick dairy farmers who used that route to bring their butter and other produce to the Cork market but who did not pay Cork County Council. In order to overcome this predicament, it was decided to make the new line a toll road and the ivy covered ruin of the toll-house is still to be seen on the roadside about 400 yards from the Castle Tavern. This road is still known as the New Line and was completed before 1834.