The Boundary Shaft is located at SJ 2612 5182, featuring a horse whim circle in an area heavily disturbed by mining, south of the disused Mineral Railway. Visible scars of earlier mining activities are present as shallow workings, now overgrown with dense vegetation.

Key 19th-century shafts in the area include:

• Cornish Shaft at SJ 2020 5180, located beside a siding on the mineral railway, fenced off with caving access.
• Busy Bee Shaft at SJ 2616 5176, adjacent to Royle’s Shaft.
• Grand Turk Shaft at SJ 2630 5170, where the chimney base and stone remains of the winding engine house are concealed in undergrowth.

Initially, Boundary and other nearby shafts operated separately until 1849, when a day-level was driven from the Minera Mines to the southeast. These operations were later incorporated into the Minera Union (1858-88) and United Minera Mines (1852-1913). Boundary Shaft marked the north-western limit of the Minera Mines workings along the Main Vein and Red Vein. In 1919, the shaft was reopened to work the North Vein until 1933, utilizing a whim for winding and ladders for man access.