28:
290:. Three cross dykes also sit on the summit plateau and further earthworks are evident on its southern flank. A cairn known as Garnedd Lwyd sits beside the main dyke at OS grid ref ST 107903 and there are further cairns known as Garneddi Llwydion at ST 104918 again beside the Senghenydd Dyke.
234:, the church here being dedicated to an obscure saint Ilan. A wireless transmission station is sited on the more northerly of the two summits (at OS grid ref ST 099911). The southerly one is crowned by a
425:
415:
166:
27:
82:
373:
303:
348:
160:
315:
75:
420:
275:
53:
279:
307:
283:
282:
stretches across the eastern side of the hill. It is considered to mark the edge of an extensive
63:
287:
227:
215:
211:
149:
251:
299:
179:
174:
302:
and thereby freely available for the public to walk. In addition there are a couple of
130:
68:
352:
409:
255:
306:
running across the hill linking the minor
Eglwysilan Road with the road between
219:
311:
235:
231:
223:
207:
145:
97:
84:
400:
259:
247:
318:
follows one of these byways along the eastern edge of the summit plateau.
263:
250:(formally the ‘Hughes Member’ and formerly the ‘Hughes Beds’) of the
43:
203:
153:
199:
401:
43169741 images of Cefn
Eglwysilan and area on Geograph website
206:, the twin 382m summits of which lie 2 km east of
173:
159:
141:
136:
126:
118:
113:
74:
62:
52:
42:
37:
20:
334:British Geological Survey 1:50,000 map sheet 249
214:county borough. Its eastern side lies within the
426:Mountains and hills of Caerphilly County Borough
266:appear beneath the main upper bed of sandstone.
8:
298:The summit plateau of the hill is mapped as
386:Rhondda & Merthyr Tydfil/Merthyr Tudful
17:
416:Mountains and hills of Rhondda Cynon Taf
230:, the hill is named after the hamlet of
327:
374:Coflein record of Senghenydd deer park
258:Period (c 309-306 million years ago).
7:
246:The hill is formed from the Hughes
226:county borough. Like neighbouring
14:
384:Ordnance Survey Explorer map 166
349:"BGS 'Geology of Britain' viewer"
26:
1:
122:back (ridge) of Ilan’s church
316:Rhymney Valley Ridgeway Walk
32:View towards Cefn Eglwysilan
252:Pennant Sandstone Formation
442:
48:382 m (1,253 ft)
338:& accompanying memoir
25:
58:235 m (771 ft)
286:associated with nearby
284:13th century deer park
254:laid down late in the
119:English translation
94: /
355:on 2 December 2016
98:51.6061°N 3.3052°W
38:Highest point
421:Marilyns of Wales
288:Caerphilly Castle
228:Mynydd Eglwysilan
212:Rhondda Cynon Taf
193:
192:
150:Rhondda Cynon Taf
433:
388:
382:
376:
371:
365:
364:
362:
360:
351:. Archived from
345:
339:
332:
169:
127:Language of name
109:
108:
106:
105:
104:
103:51.6061; -3.3052
99:
95:
92:
91:
90:
87:
30:
18:
441:
440:
436:
435:
434:
432:
431:
430:
406:
405:
397:
392:
391:
383:
379:
372:
368:
358:
356:
347:
346:
342:
333:
329:
324:
296:
280:Senghenydd Dyke
272:
244:
196:Cefn Eglwysilan
165:
102:
100:
96:
93:
88:
85:
83:
81:
80:
33:
21:Cefn Eglwysilan
12:
11:
5:
439:
437:
429:
428:
423:
418:
408:
407:
404:
403:
396:
395:External links
393:
390:
389:
377:
366:
340:
326:
325:
323:
320:
295:
292:
271:
268:
243:
240:
191:
190:
177:
171:
170:
163:
157:
156:
143:
139:
138:
134:
133:
128:
124:
123:
120:
116:
115:
111:
110:
78:
72:
71:
66:
60:
59:
56:
50:
49:
46:
40:
39:
35:
34:
31:
23:
22:
13:
10:
9:
6:
4:
3:
2:
438:
427:
424:
422:
419:
417:
414:
413:
411:
402:
399:
398:
394:
387:
381:
378:
375:
370:
367:
354:
350:
344:
341:
337:
331:
328:
321:
319:
317:
313:
309:
305:
301:
293:
291:
289:
285:
281:
277:
269:
267:
265:
261:
257:
256:Carboniferous
253:
249:
241:
239:
237:
233:
229:
225:
221:
217:
213:
209:
205:
201:
197:
188:
184:
181:
178:
176:
172:
168:
164:
162:
158:
155:
151:
147:
144:
140:
135:
132:
129:
125:
121:
117:
112:
107:
79:
77:
73:
70:
67:
65:
61:
57:
55:
51:
47:
45:
41:
36:
29:
24:
19:
16:
385:
380:
369:
357:. Retrieved
353:the original
343:
335:
330:
297:
273:
245:
195:
194:
186:
182:
15:
300:open access
274:The linear
270:Archaeology
220:Aber Valley
101: /
76:Coordinates
410:Categories
322:References
312:Senghenydd
260:Siltstones
236:trig point
232:Eglwysilan
224:Caerphilly
208:Pontypridd
183:Landranger
146:Caerphilly
86:51°36′22″N
54:Prominence
359:11 August
278:known as
276:earthwork
264:mudstones
248:Sandstone
216:community
202:in South
167:ST 097905
137:Geography
89:3°18′19″W
44:Elevation
187:Explorer
175:Topo map
142:Location
336:Newport
242:Geology
161:OS grid
69:Marilyn
64:Listing
314:. The
308:Nelson
304:byways
294:Access
185:171 /
114:Naming
204:Wales
198:is a
154:Wales
131:Welsh
361:2013
310:and
262:and
200:hill
222:in
218:of
210:in
189:166
412::
238:.
180:OS
152:,
363:.
148:/
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
