I first read about the Australian Fr Lazarus, living in the cave of St Anthony, in the book Desert Father: In the Desert with Saint Anthony. I wasn’t sure if Fr Lazarus actually was a useful literary construct rather than an actual person until I watched the BBC series of Fr Peter Owen-Jones Extreme Pilgrim where he spends time with Fr Lazarus and we see around St Anthony’s monastery:
The monk mentioned at the end of the above clip is Fr Lazarus.
Now I fell over this youtube video of archaeological and restoration work at this ancient monastery, at one of the sources of Christian monasticism. Fr Maximous el-Antony describes the work and the possibility of discovering St Anthony’s tomb: