As they frequently do this female Crossocerus annulipes found a higher position to built her nest. The entrance was located on the top of nest block 4 in section II.

References
1 Nederlands SoortenregisterBee hotel
Wasp nest!
Crossocerus annulipes♀︎
Collection
Crossocerus annulipes
LOCATION: Krimpen aan den IJssel, garden
OBSERVATION:
2023-IX-30
As they frequently do this female Crossocerus annulipes found a higher position to built her nest. The entrance was located on the top of nest block 4 in section II.
References
1 Nederlands Soortenregister