The Cariboo Rand property lies 12 kilometres southeast of Horsefly, 40 kilometres northeast of 150 Mile House or 58 kilometres east of Williams Lake. Road access is via the Likely – Horsefly road from 150 Mile House to Horsefly, then the 108 Road 9.4 kilometres to Walters Lake Road, then 14.4 kilometres to the centre of the property.
The property lies within the Quesnel Trough which is comprised of Triassic Nicola Group marine sediments, volcanics and volcaniclastics intruded by Late Triassic to Early Jurassic granodioritic intrusions. These rocks are typically overlain by Eocene calcalkaline volcanics and sediments of the Kamloops Group and Miocene flood basalts of the Chilcotin Group. The property is largely underlain by the Eocene and Miocene cover rocks with small erosional windows of granodiorite. The Takomkane batholith lies immediately to the south of the property, though the erosional window on the Megaton claims may be part of this batholith.
Outcrop exposure on the Cariboo Rand property is fair to poor where mapping has identified three primary units: basaltic lava, a siltstone to sandstone unit and a granodiorite intrusion. As well, one exposure of gabbro was noted, though it may be a coarser porphyritic phase of the basalt. Bedrock mineralization is presently concentrated in the Landing zone on the Megaton claim and was discovered by H.J. Wahl and J. Brown-John in 2002. Wahl’s 1996 exploration program lead to the discovery of the Landing zone where the original trenching consisted of a continuous 160 metre long trench (trench 1). The Landing zone is a substantial zone of leached, oxidized gossan within strong to weakly altered, highly fractured granodiorite of the Takomkane batholith. The zone measures 200 metres in length, with an apparent width of 200 metres, and is open in all directions. In 2002, trench 1 was re-opened and resampled where a series of quartz veins with intense argillic alteration envelopes and flat to gently west-dipping attitude occurs. These veins, at l to 3 metre intervals, number three to four within a 12 metre vertical interval. Copper mineralization, consisting primarily of malachite and azurite is common; native copper and chalcocite have also been observed. There appears to be a strong concentration (remobilization?) of copper approximately three to eight metres below present surface, suggesting a relationship with the water table. In 2006, a grab sample from trench 1 analysed 2.25 per cent copper and 0.11 gram per tonne gold; in 2002, grab samples from trench 1 analysed up to 4.9 per cent copper and 0.48 gram per tonne gold (Assessment Report 29322).
In 1996, H.J. Wahl and J. Brown-John conducted the first work program on their Megaton and TNT projects. They completed hand trenching and preliminary excavator trenching on a gossanous copper zone in the Takomkane batholith and obtained several encouraging results with copper values from 18 to 10,712 ppm and gold values from 1 to 4380 ppb. In 2002, Wahl and Brown-John completed excavator trenching and enzyme leach surveys. Trenching located the copper-gold Landing zone, hosting a series of flat lying subparallel quartz veins in intense argillic alteration envelopes. In 2006, Wahl and Brown-John continued with the trenching program. They completed 410 metres of exploration trail in April and a further 200 metres of exploration trail in July. They also dug trenches at three locations along the new roads and recorded copper values from 270 ppm to 0.805 per cent and gold values from 0.01 to 0.12 gram per tonne gold.