25057
Differential weathering of a series of igneous intrusions has yielded a number of prominent hills in the landscape , most notably the Dundee Law ( a late Silurian / early Devonian Mafic rock intrusion ) and Balgay hill ( a Felsic rock intrusion of similar age ) .
 Dundee Law, Devonian Mafic, Balgay hill, Felsic
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Dundee Law, Devonian Mafic, Balgay hill, Felsic