Bili Boncyrs a'r Deinosoriaid
Caryl Lewis a Gary Evans Other books by Caryl Lewis, Gary Evans
Amongst Mrs Hwyad's (Mrs Duck) little blue-green eggs, is an enormous purple egg with yellow spots! Why, then, do Bili Boncyrs and Twit the bat lead everyone to the dark cave by the lake?
Part of the series: Cyfres Bili Boncyrs