205:
66:
respectively and join forces to form the Nant Gwys proper which then flows for about 5 km / 3 mi to its confluence with the
161:
200:
152:
British
Geological Survey 1:50,000 map sheets 230 'Ammanford' & 231 'Merthyr Tydfil' & memoir accompanying latter
78:
210:
35:
89:. The river is one of several which run down the southward directed dip-slopes of the Black Mountain (
63:
86:
71:
59:
108:
94:
194:
101:
98:
124:
112:
67:
176:
163:
143:
Ordnance Survey
Explorer map OL12 'Brecon Beacons National Park: western area
17:
77:
The upper reaches of the river and its tributaries lie within the
47:
43:
111:
as 'sow stream', presumably in reference to the neighbouring
125:images of Nant Gwys and area on Geograph website
8:
206:Rivers of the Brecon Beacons National Park
136:
7:
83:Parc Cenedlaethol Bannau Brycheiniog
97:outcrop onto the mudstones of the
25:
1:
79:Brecon Beacons National Park
34:is a river flowing off the
227:
107:The name translates from
201:Black Mountain (range)
27:River in Powys, Wales
177:51.78685°N 3.80213°W
87:Fforest Fawr Geopark
173: /
93:) passing from the
50:. Its tributaries
182:51.78685; -3.80213
115:or 'boar river'.
16:(Redirected from
218:
188:
187:
185:
184:
183:
178:
174:
171:
170:
169:
166:
153:
150:
144:
141:
64:Bwlch y Ddeuwynt
58:flow south from
21:
226:
225:
221:
220:
219:
217:
216:
215:
211:Rivers of Powys
191:
190:
181:
179:
175:
172:
167:
164:
162:
160:
159:
157:
156:
151:
147:
142:
138:
133:
121:
72:Cwm-twrch-Uchaf
28:
23:
22:
15:
12:
11:
5:
224:
222:
214:
213:
208:
203:
193:
192:
155:
154:
145:
135:
134:
132:
129:
128:
127:
120:
119:External links
117:
95:Millstone Grit
36:Black Mountain
26:
24:
14:
13:
10:
9:
6:
4:
3:
2:
223:
212:
209:
207:
204:
202:
199:
198:
196:
189:
186:
149:
146:
140:
137:
130:
126:
123:
122:
118:
116:
114:
110:
105:
103:
102:Coal Measures
100:
99:Carboniferous
96:
92:
88:
85:) and within
84:
80:
75:
73:
69:
65:
61:
57:
53:
49:
45:
41:
37:
33:
19:
158:
148:
139:
106:
90:
82:
76:
55:
51:
39:
31:
29:
180: /
91:Y Mynydd Du
60:Banwen Gwyn
40:Y Mynydd Du
195:Categories
165:51°47′13″N
131:References
113:Afon Twrch
68:Afon Twrch
168:3°48′08″W
56:Gwys Fach
52:Gwys Fawr
32:Nant Gwys
18:Gwys Fawr
54:and the
109:Welsh
48:Wales
44:Powys
42:) in
62:and
30:The
70:at
197::
104:.
74:.
46:,
81:(
38:(
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.