Day 12: Here comes the sun
So much of what we do in Ireland revolves around the weather, especially for those who work outdoors. You tend to notice every little gust of wind and cloud that crosses the sky to a much greater extent than those who have to work inside each day. Day 12 was a good day weatherwise and there were no interruptions from above. We even had to break out the sunblock. A few more days like this between now and the end and we should be alright!
In Trench 4 Kieran, Deirdre and Eimear dug as far down as they could go. Because of the water level in the bottom of the ditch, they were unable to keep digging. The water was so muddy that it was impossible for them to know what they were digging and while it seems that the ditch does go deeper because of the slope of each of the sides, at the moment it is too wet and messy to dig. We also checked to see the relative level of the water in the trench compared to the level of water in the river. We did this using a dumpy level and believe it or not, the river level is actually about 30cm higher than the ditch water level. This is not what you would normally expect. Furthermore, we tried to bale out water from the bottom using buckets, and as we did so, fresh clear water flowed in from the direction of the river. It seems that the water level in the river rises more quickly than the local water-table. By the end of the day, we decided it was time to start drawing a section – the vertical side of the trench. This is an important part of the recording process and will help explain some of the processes
In Trench 1 Gary and Niamh continued to take out the upper ditch fills across the outer enclosure ditch. They succeeded in completely removing one of the layers, taking a bulk sample of the soil for future specialist analysis, and began to remove the next one, also sampling it and removing it. Good work was done and the level of the trench is steadily coming down. More and more ‘natural’ or undisturbed, non-archaeological soil is becoming visible.
In Trench 3 Matt and Darren continued working on the ditch fills there especially the area overlying the bank at the eastern side of the trench. The geophysical survey carried out prior to the excavation suggested that this inner area to the east of the bank was lower resistance, perhaps more moist and organic. The more digging that Matt and Darren do in this area, the more the initial geophysics is proven right. The soils in this area do indeed appear to be different to the others over the ditch and may represent an area where rubbish was disposed of creating a midden or ‘compost heap’ layer of decayed organic material. Because this was so long ago, this material doesn’t look like compost but the soil is slightly darker and richer than those around it and definitely suggests that there is organic material in it. When we sample this soil and the specialists take a look, we will know for certain. Matt also did some work on the section face – the vertical side of the trench – to work out the exact sequence of layers and fills and their relationships to each other. They also uncovered a bit more of the layer of large cobbles in the edge of the ditch.
This may have been a deliberate design feature where the inner face of the ditch (outer face of the bank) was cladded in large stones. They may also represent a foundation layer upon which the bank was constructed. Work in this area has begun to speed up because Matt and Darren were joined by Eimear and Deirdre from Trench 4. As Kieran is drawing there, there is nothing for them to do so they were redeployed as the Trench 3 support team.