How common were lines of Bronze Age barrows in the study area oriented in particular directions? This was answered by identifying such lines, and by looking at them in their context in the landscape, which varied considerably? By systematically looking at the landscape context (by using computer programmes that recreate bare horizons visible from such lines) and where the lines pointed towards in the landscape , and a computer programme that computed the prevalence of lines, compared with the pattern due to randomness, it was possible to identify how far the lines pointed towards significant locations of predictable solar and lunar events on the horizon during the Bronze Age. The systematic approach made it possible to identify statistically significant trends.