A record of Pennant's travels in Wales in 1773, first published in two volumes in 1778 and 1781. The second, more reliable edition was published in 1784 with references in vol. 2 to P153 Llyn Cau, Cader Idris on p. 88 and to P152 Snowdon from Llyn Nantlle on p. 181. The author, Thomas Pennant (1726-1798) of Downing, Flintshire was a distinguished naturalist, antiquary and traveller. His portrait, painted by Gainsborough in 1776, is in National Museum Wales, Cardiff (NMW A 97). Dr Johnson described him as 'the best traveller I have ever read' and he did much to encourage interest in the topography and history of Wales. His British Zoology (1768-70) and Arctic Zoology (1784-85) also brought him academic acclaim.
See further: P. Bishop, 'Thomas Pennant (1726-98): The Journey to Snowdon and its influence on artists visiting North Wales', The British Art Journal, vol. 19, no. 3, Winter 2018/2019, pp. 87-95.