English: Crag, with entrance of Dumbarton Cave. Alongside Havoc Road is a crag upon which a convent stands (the convent is shown here: 431874).

The entrance of Dumbarton Cave (which is also known by other names - see below) is located at the base of this crag, and is visible in this photograph as the dark opening at the right-hand side.

In "Dumbarton through the Centuries", Dr I. M. M. MacPhail discusses this cave:

"Both Wallace and Bruce, the great heroes of the Scottish War of Independence, were associated with Dumbarton and district. Our information about Wallace, however, is drawn mainly from folk tradition, much of it incorporated in Blind Harry's poem, written almost two centuries after Wallace's time. Blind Harry gives an account of Wallace and his men burning the houses in Dumbarton occupied by English soldiers and afterwards seeking shelter in the Dumbarton Cave before passing on to the Gareloch. Dumbarton Cave was presumably the place now called Wallace's Cave at Havock, formerly known as the Havock Hole, and referred to in the old couplet:

'In at the flow of Havock And out at the yetts of Carman'

It is worth noting that this rhyme antedated the cutting at the west end of the Dalreoch railway tunnel which revealed in the sandstone rock a subterranean passage running almost due north from the Havock Hole in the direction of Carman Hill."

In the above, "yett" is an old Scots word for gate (or, by extension, a pass between two peaks). In any case, there is no way to confirm (or refute) the tradition that associates Wallace with this cave. For a closer look at the cave entrance, see: 1054828.