An area surrounding Oodla Wirra on the Barrier Highway, and covering most of the Dusthole Range and south-eastern Nackara Hills, has been explored for possible sediment-hosted gold, after the licensee used research conducted by CODES at the University of Tasmania (UTAS) to identify gold bearing target areas within the Adelaide Geosyncline which appear to have favourable structural settings. The CODES study had investigated elevated levels of gold formed within pyrite through geologic time, to estimate the ages of periods of peak gold emplacement and resultant erosion/weathering, and therefore to identify sedimentary basins which are likely to be sources of economic amounts of shed gold mineralisation. Their work done using samples from the Nackara Arc region identified strata of the Ulupa Siltstone (542–590 Ma depositional time range) as falling inside one of six time periods recognised as more prospective for the occurrence of this type of gold mineralisation. Taking evidence from world class sediment-hosted gold deposits already found around the globe, such as 962 Mt Sukhoi Log in Russia, large antiformal trap sites in this particular region were targeted because there the prospective host strata have been brought close to the surface. Recently, the licensee's parent company DGO Gold Limited had entered into an agreement with CODES and UTAS to fund a research project in order to access the research findings and supporting database. During the first licence year, Yandan Gold Mines (Yandan) compiled and reviewed past exploration reports and data, including remote sensing data, to inform planning of its work programme. The limbs of a large syncline of Ulupa Siltstone occupy most of the subject EL 6209. This syncline wraps around the anticline on which the structurally controlled Mount Grainger Goldfield is situated. In the far south-east of EL 6209 a parallel antiformal structure is developed with some similarities to that hosting the known gold occurrences. Weakly anomalous gold and base metal mineralisation revealed by historical drilling (the 1993 SAEI / MESA - run ORROROO [mapsheet area] bedrock drilling campaign) lies just outside of EL 6209, on Yandan's Parkvilla EL 5876 to the north. A structural interpretation of available open file magnetic and gravity data was conducted by Yandan’s consultants, Terra Resources Pty Ltd and Clare Geological Services Pty Ltd, and was applied to target selection. It was recognised that Yandan's Dawson Project tenements occupy a structural position in the Nackara Arc where the fold trend flexes from a N-S to a NE-SW alignment, reflecting disturbance of Delamerian fold axes. The axial plane flexure was interpreted to occur where the folds meet a pronounced NW trending magnetic lineament. In addition, features shown on magnetic images and borne out by sparse drilling records also pointed to the presence of potentially influential igneous intrusions within the project area (as magnetic lows) that could represent hydrothermal heat sources. Lastly, the Ulupa Siltstone within the Dawson Syncline displays higher than typical magnetic attenuation that it was though could possibly represent pervasive alteration. No high priority targets were identified identified by the geophysical data interpretation as lying within the subject EL 5876, although some low priority structural targets are evident near it. During a field trip made in July 2018 to examine the flanks of the Dawson Syncline, 3 rock chip grab samples were collected from outcrops of Ulupa Siltstone visited within the Dusthole Range on EL 6209. No significant gold or copper assay values were returned. Because of the changed outlook concerning the gold deposit size likely to be found in the Dawson area, it was decided to fully surrender the licence.