Table 2: Horizon points comparison

Horizon Feature Review Astronomical Horizon Targets
Feature no. Horizon feature Distance Height Notes Az. (Degrees)   Astron. Horizon target Notes Az. (Degrees)
1 Head of Ben Bulben       8        
2 Ben Bulben (peak) 13km 527m   13        
3 King's Mountain       26        
4 Truskmore 17km 646m   35   Major lunar standstill limit (Rise N) Correspondence 1; Southern Limb 39
          49   Summer solstice sunrise    
5 Crockauns 12km     52        
              Minor lunar standstill limit (Rise N)   57
              Summer-start/end sunrise   59
6 Keeloggyboy 12km 440m   62        
7 Leean Mountain 15km 418m   69        
8 Benbo 19km 416m   77        
9 Cairns Hill East     Passage tomb 81        
10 Between cairns in CH       82        
11 Cairns Hill West     Passage tomb 83        
              Equinox sunrise   89
12 Killerry Mountain       102        
13 The Saddle 6km     117   Winter-start/end sunrise Correspondence 2 118
14 Aughamore Far     Passage tomb 121     Correspondence 3, in the dip between two passage tombs  
  Dip A       123   Minor lunar standstill limit(Rise S)   123
15 Sliabh Dha Éan     Passage tomb 125        
  Dip B       127        
16 Sliabh Dargan     Passage tomb 129        
  Dip C       131        
17 Cailleach a Bhérra's House 6km   Passage tomb 132   Winter solstice sunrise Correspondence 4 132
              Major lunar standstill limit (Rise S)   147
18 Union Rock       154        
19 Carrowkeel F 24km 302m Passage tomb 158        
20 Keash Hill 21km 1188m Passage tomb 166        
21 Carrignagat (Eastern Limb of Ox Mts)       171        
              Major lunar standstill limit (Set S)   213
22 Knocknashee 18km 810m Passage tomb 216        
23 Croaghaun Mtn 8km 207m Passage tomb 221        
              Winter solstice sunset   228
24 Doomore Mtn 11km 334m Probable passage tomb 237   Minor lunar standstill limit (Set S) Correspondence 5 237
              Winter-start/end sunset No correspondence 241
25 Knockachree 15km 538m   250        
26 Red Hill 14km     262        
27 Knocknarea, Southern Limb       270   Equinox sunset Correspondence 6 271
28 Knocknarea Peak 4km 1083m Passage tomb 286        
29 Knocknarea, N. escarpment       298   Summer-start/end sunset Correspondence 7 296
30 Knocknarea, base of hill       300   Minor lunar standstill limit (Set N) Correspondence 8 303
              Summer solstice sunset   316
              Major lunar standstill limit (Set N) No correspondence 326
31 Slieve League 49km     345        
32 Croaghacullion 54km 1250m   350