The building of the Ben Cruachan pumped-storage hydro-electric scheme.
| Release Date | October 15, 1968 | |
|---|---|---|
| Status | Released | |
| Original Title | The Hollow Mountain | |
| Runtime | 14min | |
| Budget | — | |
| Revenue | — | |
| Language | English | |
| Original Language | English | |
| Production Countries | — | |
| Production Companies | Templar Film Studios | |