The guide you get from the Tourist Office in Burgos indicates that there is a bar/restaurante and a Casa Rural here. They are all closed down, and it looks permanent.
Pay attention: From here you walk on a paved road, but there are no more markers all the way to the end of the day in Modubar de San Cibrian! I may have missed a marker?
Just follow the asphalt road. There are some ups and downs, but nothing difficult. 2 kms after Emparedada you come to an unmarked T crossing. Take to the right. After 300 more m. another crossing, marked Modubar de la Cuesta/Los Ausines. Follow the sign and take right. You are still on asphalt, but the traffic is insignificant. After a while you arrive at a church shorthly after the top. Leave the road and pass the church, walking down to the village. At the bottom, you will find a friendly bar with real beer from the tap, and food.