The Spoken Corpus of the Southern Dutch Dialects (GCND) is a linguistically annotated, audio-aligned corpus of 653 recordings from 639 locations across Belgium, northern France, and the southern Netherlands. Most recordings (623) date from 1963–1976 and involve speakers born around 1900 (beginning 1871); 30 new recordings (2020–2024) fill geographic gaps. All recordings were transcribed using a two-tier orthographic protocol and annotated with POS tags, lemmas, and syntactic parses via the Alpino parser, supplemented by manual pre- and post-processing. The corpus is searchable through the Dutch Language Institute (INT) using the BlackLab and GrETEL interfaces. GCND forms an unprecedented resource for research on Dutch dialect variation, spoken corpus annotation, but also dialect-sensitive speech technology. Words, lemmata, metadata, and syntactic structures are accessible for non-commercial research use. The search interface of the corpus can be accessed via https://hdl.handle.net/10032/tm-a2-z8 (CLARIN login required). It is hosted by the Institute for the Dutch Language (www.ivdnt.org). Via a web-based frontend (https://blacklab-frontend.ivdnt.org/), users can search transcription tiers, metadata, POS tags, and syntactic structures through a dual platform consisting of BlackLab (for token‑based search)(https://blacklab.ivdnt.org/) and GrETEL (for treebank queries). In this OSF repository, you can find 1. The project documentation, including the syntactic annotation protocol 2. The transcription protocol 3. The metadata of the recordings and the recorded speakers The metadata file contains two tabs: (1) "Opname" ('recording') and (2) "Spreker" ('speaker'). Under (1), each recording is identified by a code for the location, called the Kloeke-code (after the dialectologist G.G. Kloeke who developed the system in the 1920s), which is the standard way in Dutch dialectology. This is further extended by a number with an underscore, as there may be more than one recordings from one location. For instance, I175p_4 is the 4th recording from Sint Niklaas. There is furthermore information on the dialect region, the province, and which collection the recording is from (UGent or Meertens Institute), whether the place is also a sampling place of earlier dialect surveys (RND and SAND), and the date of the recording. Under tab (2), there is information on the speakers, of which there may be more than one per recording. On the recording I175p_4 from Sint Niklaas, for instance, there were two speakers, identified by adding a number with an underscore to the ID of the recording: I175p_4_1 and I175p_4_2. The tab on the speakers furthermore contains information on the education, profession, and mobility of the speaker, as well as information on the mobility of their parents and spouse.