The B & B occurrence is located on the east side of Horse (formerly Moose) Creek near its headwaters. The creek flows westward into Surprise Lake, 35 kilometres northeast of the community of Atlin.

The creek is located well within the Late Cretaceous Surprise Lake batholith (Surprise Lake Plutonic Suite) which covers about 1100 square kilometres northeast of Atlin. This alaskitic body has intruded into Upper Paleozoic volcanic and sedimentary rocks of the Cache Creek Complex.

In 1979, the area was prospected for uranium and at that time geologists noted northeast trending shear zones. Locally, the rocks are limonitic and manganiferous. Traces of pyrite and galena have been noted. Uranium was identified only as small amounts in soils near the creek.

In 2008, Future Metals Inc. conducted stream and soil sediment sampling in the area as the Atlin Horse property.